First off, this is just discrepancies I found in the Smogon RBY movedex regarding move typing, accuracy, and effect. If nobody else does, I'll probably do something explaining in detail mechanics of specific moves (wrap, etc), but this is not meant to address that (yet).
Anything on this list marked with an asterisk indicates that I haven't verified it. Several other moves that I'm not completely sure on are Headbutt and Stomp for flinching ratio, if someone can check those for me that'd be great. Also, I might've missed a few, although I'm pretty sure I got all the major ones. But if you have anything to add, please do so.
Agility
Type: Psychic
Power: none
PP: 30
Accuracy: none
Description: Relaxes the body to sharply boost speed, negating previous effects of paralysis
Effect: none
Amnesia
Type: Psychic
Power: none
PP: 20
Accuracy: none
Description: Forgets about something and sharply raises Special.
Effect: none
Bind
Type: Normal
Power: 15
PP: 20
Accuracy: 75%
Description: Hits foe for 2 to 5 turns during which the foe cannot attack
Effect: none
Bite
Type: Normal
Power: 60
PP: 25
Accuracy: 100%
Description: Bites with vicious fangs. May cause flinching.
Effect: 10%
Blizzard
Type: Ice
Power: 120
PP: 5
Accuracy: 90%
Description: Hits the foe with an icy storm that may freeze it
Effect: 10%
Clamp
Type: Water
Power: 35
PP: 10
Accuracy: 75%
Description:
Effect: Hits foe for 2 to 5 turns during which the foe cannot attack
Counter
Type: Fighting
Power: none
PP: 20
Accuracy: 100%
Description: Retaliates the latest hit with double the damage if it was Normal or Fighting type attack
Effect: none
Dig
Type: Ground
Power: 100
PP: 10
Accuracy: 100%
Description: Digs underground the first turn and strikes the next turn
Effect: none
Double-Edge
Type: Normal
Power: 100
PP: 15
Accuracy: 100%
Description: A life-risking tackle that also hurts the user
Effect: none
Explosion
Type: Normal
Power: 170
PP: 5
Accuracy: 100%
Description: Makes the user faint unless it breaks a Substitute and halves defense while calculating damage
Effect: none
Fire Blast
Type: Fire
Power: 120
PP: 5
Accuracy: 85%
Description: A fiery blast that scorches all. May cause a burn.
Effect: 30%
Fire Spin
Type: Fire
Power: 15
PP: 15
Accuracy: 70%
Description: Hits foe for 2-5 turns during which the foe cannot attack
Effect: none
Fissure
Type: Ground
Power: 5
PP: 5
Accuracy: 30%
Description: A one-hit KO move that has no effect on faster foes
Effect: none
Focus Energy
Type: Normal
Power: none
PP: 30
Accuracy: none
Description: Reduces critical-hit ratio by 75%
Effect: none
Growth
Type: Grass
Power: none
PP: 40
Accuracy: none
Description: Forces the body to grow and heightens Special
Effect: none
Guillotine
Type: Normal
Power: none
PP: 5
Accuracy: 30%
Description: A one-hit KO attack that has no effect on faster foes
Effect: none
Gust
Type: Normal
Power: 40
PP: 35
Accuracy: 100%
Description: Strikes the foe with a gust of wind whipped up by the wings
Effect: none
Haze
Type: Ice
Power: none
PP: 30
Accuracy: none
Description: Removes all battle modifications other than Substitute and user's status ailments
Effect: none
Horn Drill
Type: Normal
Power: none
PP: 5
Accuracy: 30%
Description: A one-hit KO move that has no effect on faster foes
Effect: none
Hyper Beam
Type: Normal
Power: 150
PP: 5
Accuracy: 90%
Description: Leaves the user immobile the next turn unless the foe is KO'd, it breaks a Substitute, hits a Ghost type, or misses.
Effect: none
Karate Chop
Type: Normal
Power: 50
PP: 25
Accuracy: 100%
Description: A chopping attack with a high critical-hit ratio
Effect: none
Leech Seed
Type: Grass
Power: none
PP: 10
Accuracy: 90%
Description: Plants a seed on non-Grass type foes to steal 1/16 HP on every turn
Effect: none
Light Screen
Type: Psychic
Power: none
PP: 30
Accuracy: none
Description: Creates a wall of light that lowers Special damage done to the user
Effect: none
Low Kick
Type: Fighting
Power: 50
PP: 20
Accuracy: 90%
Description: A kicking attack*
Effect: none
Mimic
Type: Normal
Power: none
PP: 10
Accuracy: none
Description: Copies one of the foes's moves at random until the user is switched out
Effect: none
Petal Dance
Type: Grass
Power: 70
PP: 20
Accuracy: 100%
Description: A rampage of 3 to 4 turns that confuses the user.
Effect: none
Poison Sting
Type: Poison
Power: 15
PP: 35
Accuracy: 100%
Description: A toxic attack with barbs, etc., that may poison.
Effect: 20%
Psychic
Type: Psychic
Power: 90
PP: 10
Accuracy: 100%
Description: A powerful psychic attack that may lower Special
Effect: 30%*
Razor Wind
Type: Normal
Power: 80
PP: 10
Accuracy: 75%
A 2-turn move that strikes the foe on the 2nd turn.
Reflect
Type: Psychic
Power: none
PP: 20
Accuracy: none
Description: Creates a wall of light that weakness physical attacks striking the user
Effect: none
Roar
Type: Normal
Power: none
PP: 20
Accuracy: 100%
Description: Forces wild Pokemon to flee. Has no effect in trainer battles.
Effect: none
Rock Slide
Type: Rock
Power: 75
PP: 10
Accuracy: 90%
Description: Large boulders are hurled.
Effect: none
Selfdestruct
Type: Normal
Power: 130
PP: 5
Accuracy: 100%
Description: Makes the user faint unless it breaks a Substitute and halves defense while calculating damage
Effect: none
Substitute
Type: Normal
Power: none
PP: 10
Accuracy: none
Description: Creates a decoy using 1/4 of the user's maximum HP that blocks Poison, stat loss, Confusion, Leech Seed, and secondary effects of damaging attacks
Effect: none
Thrash
Type: Normal
Power: 90
PP: 20
Accuracy: 100%
Description: A rampage of 3 to 4 turns that confuses the user.
Effect: none
Thunder
Type: Electric
Power: 120
PP: 10
Accuracy: 70%
Description: A lightning attack that may cause paralysis
Effect: 10%
Toxic
Type: Poison
Power: none
PP: 10
Accuracy: 85%
Description: Poisons the foe with a toxin that intensifies until the foe is switched out
Effect: none
Tri Attack
Type: Normal
Power: 80
PP: 10
Accuracy: 100%
Description: Fires three types of beams at the same time.
Effect: none
Whirlwind
Type: Normal
Power: none
PP: 20
Accuracy: 85%
Description: Forces wild Pokemon to flee. Has no effect in trainer battles.
Effect: none
Wing Attack
Type: Flying
Power: 35
PP: 35
Accuracy: 100%
Description: Strikes the foe with wings spread wide
Effect: none
Wrap
Type: Normal
Power: 15
PP: 20
Accuracy: 85%
Description: Hits foe for 2 to 5 turns during which the foe cannot attack
Effect: none
Anything on this list marked with an asterisk indicates that I haven't verified it. Several other moves that I'm not completely sure on are Headbutt and Stomp for flinching ratio, if someone can check those for me that'd be great. Also, I might've missed a few, although I'm pretty sure I got all the major ones. But if you have anything to add, please do so.
Agility
Type: Psychic
Power: none
PP: 30
Accuracy: none
Description: Relaxes the body to sharply boost speed, negating previous effects of paralysis
Effect: none
Amnesia
Type: Psychic
Power: none
PP: 20
Accuracy: none
Description: Forgets about something and sharply raises Special.
Effect: none
Bind
Type: Normal
Power: 15
PP: 20
Accuracy: 75%
Description: Hits foe for 2 to 5 turns during which the foe cannot attack
Effect: none
Bite
Type: Normal
Power: 60
PP: 25
Accuracy: 100%
Description: Bites with vicious fangs. May cause flinching.
Effect: 10%
Blizzard
Type: Ice
Power: 120
PP: 5
Accuracy: 90%
Description: Hits the foe with an icy storm that may freeze it
Effect: 10%
Clamp
Type: Water
Power: 35
PP: 10
Accuracy: 75%
Description:
Effect: Hits foe for 2 to 5 turns during which the foe cannot attack
Counter
Type: Fighting
Power: none
PP: 20
Accuracy: 100%
Description: Retaliates the latest hit with double the damage if it was Normal or Fighting type attack
Effect: none
Dig
Type: Ground
Power: 100
PP: 10
Accuracy: 100%
Description: Digs underground the first turn and strikes the next turn
Effect: none
Double-Edge
Type: Normal
Power: 100
PP: 15
Accuracy: 100%
Description: A life-risking tackle that also hurts the user
Effect: none
Explosion
Type: Normal
Power: 170
PP: 5
Accuracy: 100%
Description: Makes the user faint unless it breaks a Substitute and halves defense while calculating damage
Effect: none
Fire Blast
Type: Fire
Power: 120
PP: 5
Accuracy: 85%
Description: A fiery blast that scorches all. May cause a burn.
Effect: 30%
Fire Spin
Type: Fire
Power: 15
PP: 15
Accuracy: 70%
Description: Hits foe for 2-5 turns during which the foe cannot attack
Effect: none
Fissure
Type: Ground
Power: 5
PP: 5
Accuracy: 30%
Description: A one-hit KO move that has no effect on faster foes
Effect: none
Focus Energy
Type: Normal
Power: none
PP: 30
Accuracy: none
Description: Reduces critical-hit ratio by 75%
Effect: none
Growth
Type: Grass
Power: none
PP: 40
Accuracy: none
Description: Forces the body to grow and heightens Special
Effect: none
Guillotine
Type: Normal
Power: none
PP: 5
Accuracy: 30%
Description: A one-hit KO attack that has no effect on faster foes
Effect: none
Gust
Type: Normal
Power: 40
PP: 35
Accuracy: 100%
Description: Strikes the foe with a gust of wind whipped up by the wings
Effect: none
Haze
Type: Ice
Power: none
PP: 30
Accuracy: none
Description: Removes all battle modifications other than Substitute and user's status ailments
Effect: none
Horn Drill
Type: Normal
Power: none
PP: 5
Accuracy: 30%
Description: A one-hit KO move that has no effect on faster foes
Effect: none
Hyper Beam
Type: Normal
Power: 150
PP: 5
Accuracy: 90%
Description: Leaves the user immobile the next turn unless the foe is KO'd, it breaks a Substitute, hits a Ghost type, or misses.
Effect: none
Karate Chop
Type: Normal
Power: 50
PP: 25
Accuracy: 100%
Description: A chopping attack with a high critical-hit ratio
Effect: none
Leech Seed
Type: Grass
Power: none
PP: 10
Accuracy: 90%
Description: Plants a seed on non-Grass type foes to steal 1/16 HP on every turn
Effect: none
Light Screen
Type: Psychic
Power: none
PP: 30
Accuracy: none
Description: Creates a wall of light that lowers Special damage done to the user
Effect: none
Low Kick
Type: Fighting
Power: 50
PP: 20
Accuracy: 90%
Description: A kicking attack*
Effect: none
Mimic
Type: Normal
Power: none
PP: 10
Accuracy: none
Description: Copies one of the foes's moves at random until the user is switched out
Effect: none
Petal Dance
Type: Grass
Power: 70
PP: 20
Accuracy: 100%
Description: A rampage of 3 to 4 turns that confuses the user.
Effect: none
Poison Sting
Type: Poison
Power: 15
PP: 35
Accuracy: 100%
Description: A toxic attack with barbs, etc., that may poison.
Effect: 20%
Psychic
Type: Psychic
Power: 90
PP: 10
Accuracy: 100%
Description: A powerful psychic attack that may lower Special
Effect: 30%*
Razor Wind
Type: Normal
Power: 80
PP: 10
Accuracy: 75%
A 2-turn move that strikes the foe on the 2nd turn.
Reflect
Type: Psychic
Power: none
PP: 20
Accuracy: none
Description: Creates a wall of light that weakness physical attacks striking the user
Effect: none
Roar
Type: Normal
Power: none
PP: 20
Accuracy: 100%
Description: Forces wild Pokemon to flee. Has no effect in trainer battles.
Effect: none
Rock Slide
Type: Rock
Power: 75
PP: 10
Accuracy: 90%
Description: Large boulders are hurled.
Effect: none
Selfdestruct
Type: Normal
Power: 130
PP: 5
Accuracy: 100%
Description: Makes the user faint unless it breaks a Substitute and halves defense while calculating damage
Effect: none
Substitute
Type: Normal
Power: none
PP: 10
Accuracy: none
Description: Creates a decoy using 1/4 of the user's maximum HP that blocks Poison, stat loss, Confusion, Leech Seed, and secondary effects of damaging attacks
Effect: none
Thrash
Type: Normal
Power: 90
PP: 20
Accuracy: 100%
Description: A rampage of 3 to 4 turns that confuses the user.
Effect: none
Thunder
Type: Electric
Power: 120
PP: 10
Accuracy: 70%
Description: A lightning attack that may cause paralysis
Effect: 10%
Toxic
Type: Poison
Power: none
PP: 10
Accuracy: 85%
Description: Poisons the foe with a toxin that intensifies until the foe is switched out
Effect: none
Tri Attack
Type: Normal
Power: 80
PP: 10
Accuracy: 100%
Description: Fires three types of beams at the same time.
Effect: none
Whirlwind
Type: Normal
Power: none
PP: 20
Accuracy: 85%
Description: Forces wild Pokemon to flee. Has no effect in trainer battles.
Effect: none
Wing Attack
Type: Flying
Power: 35
PP: 35
Accuracy: 100%
Description: Strikes the foe with wings spread wide
Effect: none
Wrap
Type: Normal
Power: 15
PP: 20
Accuracy: 85%
Description: Hits foe for 2 to 5 turns during which the foe cannot attack
Effect: none