I wanted to take the time to nominate a few Pokemon for either rank changes, additions, or removals. Since this is a complilation of them I don't have much to support these, but playing the tier a little should help you understand why I feel this way with all of these Pokemon. Current rank on the left, my nominations on the right. Click the Pokemon for sample sets.
RISES
ㅤㅤA S (or ban)
The literal strongest Pokemon in the tier. You have to prepare for this, otherwise you will get steamrolled (and good luck checking it early game, it has no one true reliable counter past itself!). From STABs that can poison, Nasty Plot, U-Turn/Volt Switch, Focus Blast, Grass Knot, and more, it is incredibly overbearing to both figure out its set and its moves. I'd even go so far to say that its stronger than Tapu Koko, who is widely regarded as one of the most consistent and versatile pivots in the tier for its customisation and output. To top it all off it gets Volt Absorb, which, while usually isn't too big a deal, in Revelationmons so many top Pokemon use Electric-type moves, allowing for Thundurus to simply punish it and possibly even decide a game then and there. If this doesn't go soon, then it should easily be S tier.
A S-
The de-facto stallbreaker and role compression Pokemon. While it seems like Heatran doesn't benefit much from Revelationmons, this is hilariously far from true. Rather, it allows for Heatran to become a multi-purpose Pokemon, like a check to Fairy-types like Tapu Lele and Clefable, or a Body Press cleaner that beats Corviknight and, Skarmory, and can threaten Slowbro with Power Herb variants, on top of its already stellar regular sets. Quite literally the only problem this Pokemon has is the speed tier, and even that isn't the worst.
A A+
ponchlake outlined why it's so good now, so I won't go into detail. Generally, it's the best Spiker in the tier and threatens a wide range of Pokemon with Iron Barbs, Leech Seed, Knock Off, and Thunder Wave. I personally don't view it as the strongest Body Press user ever, but the option is there for you to use too.
A- A
Still one of the top breakers in the tier despite the Close Combat restrict. It has the choice of Play Rough, Psychic Fangs, or Thrash for STAB, and Close Combat is still a top move on it for its ability to shred even Steelix if played properly. Accelerock is also an amazing move to have in pretty much every game.
C- A
This Pokemon already had the tools to threaten most of the tier, but now that's cranked up to eleven. It's very similar to how it performs in standard OU, but the addition of STAB Double-Edge and the ability to use Dark Ice Shard or Triple Axel and Ice Beat Up and Knock Off just makes Weavile that much harder to deal with in practice.
B A
Really strong Pokemon in the meta currently thanks to Ground-type Body Press. It does lack reliable recovery and is exploitable on the Special side, but otherwise is really strong. It's also the most consistent answer to the Electric-types in the tier, as not even Adamant Luxray can threaten to 2HKO Steelix without a critical hit, 3 Spikes on the field, or noticeable prior chip.
B- A-
Great utility mon that somehow has gone under the radar for so long. It serves a variety of niches like a Defogger, pivot, Ground-type check, Choice Scarfer, cleaner, and more. Pain Split also keeps it healthy enough to keep it going over the course of the game for more defensive checks, while Trick ruins any and all defensive teams. It's not like Dragon-types don't fear it either, as all of them barring Dracozolt fear either Paralysis or Volt Switch chunking them before going to another partner like Heatran or Ferrothorn.
B- A-
Same old Kyurem from the OU days. It's slightly worse, but the difference is so pathetic you won't notice it in 95% of games. DD sets now get better Ice-type STABs though, although Icicle Spear is still a decent option.
UR B+
Barraskewda, while decently unexplored since its unban, is still incredibly good at being a rain abuser. From Close Combat to Flip Turn to Psychic Fangs and Crunch to the choices of STAB of Double-Edge, Thrash, and Liquidation, it is very hard to deal with it before you know what set it is running. While it is not as abusable as when it had STAB Close Combat, it is still a strong enough threat that it needs to be at least partially considered in the teambuilder which is not always common when it comes to rain. Just be careful of Gastrodon.
UR B+
Another unranked threat, although I'd personally not put this higher than B+ because of the state of the tier. It's an incredibly strong Nasty Plot Pokemon with options for Choice Item, AoA, and Defog sets, but the main aspect of it is the incredibly powerful STAB options it now gets access to. Levitate also means that it checks Pokemon like non-Steel Storm Heatran, Entei, and Landorus-Therian.
C B+
How is this C?! While Tornadus doesn't get a major buff in Revelationmons outside of an actual physical STAB and a more reliable special STAB, its role as both a RegenVest pivot and a Defogger cannot go unnoticed, especially for a Pokemon who can scare Tapu Koko with Sludge Bomb if it so chooses to. It still has the same issues as other Flying-types, but its utility and unsuspecting damage output really make it much better than just C tier. If you've ever used this Pokemon for even a decent amount of time, you'll understand exactly why I think this way.
UR B
Still a great utility Pokemon and attacker, but with a slightly worse defensive typing compared to its counterpart. However, it does have one defensive niche - It completely soft counters unboosted Thundurus-Therian and Tapu Koko, which no other Pokemon can boast. It also has good offensive output, although the lack of a high BP STAB outside of Overheat isn't all that desirable.
UR B
https://www.smogon.com/forums/threads/revelationmons.3692297/page-6#post-9253619
UR C+ | UR C
Niche picks that functions as really nice Choice Scarf Pokemon while still having the boons of the other Rotom formes. Rotom-Mow has the benefit of not being weak to Stealth Rock and a nice nuke move, while Rotom-Frost has near-perfect STAB coverage. Both can run other sets too, but are less reliable and require more support to function. It's also worth mentioning that both can run Choice Specs sets effectively too, unlike their counterparts, but again require more support to function.
DROPS
A+ A-ㅤ
Lumping them together because they have the same issues in practice. Quite simply, the metagame does not like either of these two Pokemon defensively, with Choice Band breakers like Urshifu just completely disregarding their bulk and 2HKOing without a care in the world. It's not like they're uncommon either, because there's
8 checks in just A- and above. It's gotten so bad that its almost comical if there aren't at least 2 Pokemon on your team that somewhat threaten these two. Their utility is what keeps them at A- respectively for me.
A+ B
I cannot state how much of a momentum drain this Pokemon is. Past being the "best" Special wall in the tier, this Pokemon literally does nothing that other Pokemon can do better. Its lack of a proper offensive stat means that it invites in threats like Garchomp, Tapu Koko, and Hydreigon for free, while it has to choose between paralysing Ground-type or Ghost-type Pokemon respectively. It's completely limited to bulkier teams as a blanket Special check, and rarely some balance teams.
A A-
The loss of Steel Close Combat hurt Aegislash slightly, along with metagame shifts making it harder to effectively use Aegislash. It's still incredibly powerful, just harder to abuse now.
B+ C+
I can't say the same about Zarude though. The loss of STAB Close Combat absolutely shafts Zarude and now it lacks one reliable STAB, either via damage or accuracy. Now, its about as good as the rest of the B-/C+ Pokemon.
B C
It's just not that desirable? Like in practice it's fine but I've never thought to myself that Mimikyu fits on a WIP team instinctively or that I wished that I had it on my team at any point. It also just doesn't do too much in the current meta that other Pokemon can't do.