FINAL VR UPDATE:
RISES:
Nihilego to S: Nihilego has maintained its spot at #1 usage over time, and has proven to be a super-safe addition to any team in need of hazards, hazard control, and/or a raichu check. Just a fantastic mon
Mew to S: This thing is only stopped by, what? Toxic and Celesteela/Metagross? Unaware Nihilego (gross)? Swords Dance Bulu? Water Veil Sharpedo???? I think the list ends there. Priority Calm Mind+Wisp is just so dumb, and this thing is simultaneously a wincon and a monster of a mixed wall. Thankfully, there's only 4 moveslots so it doesn't quite demolish everything in sight. 80% winrate with 10 uses, btw.
Forretress to A+: Along with Nihi this thing is also a virtually braindead addition to teams- it spins, pivots, and just in general doesn't die (unless the opponent has a Pinch, which is keeping it from S imo)
Raichu to A+: Fantastic offensive pivot that also has virtually no way to block its Volt Switch outside of Lanturn, which is Trapinch bait. Remind me to ban arena trap in the future lol
Metagross to A+: Base Metagross has shown great results that have only been boosted by the addition of its Mega, which makes turn 1 guessing a nightmare against this thing, not to mention it actually can beat Mew. Steel resists also continue to dwindle as Trapinch continues to centralize the meta.
Trapinch to A+: If you lose to Trapinch, you better have a great reason to be used. This dumb little guy gets 1-2 kills a game minimum if you play it right, and has some defensive utility to boot. It's also the reason a bunch of stuff has to waste a moveslot on U-Turn (like Unown), but then again Pursuit is always an option. Scary stuff. Maybe even S due to how much it warps the mod, but I'll be conservative here.
Toucannon to A: I don't think this thing will ever be bad, best physical wall not named Mew, that kind of does Mew things but not as well in exchange for beating Metagross and having better moveslot flexibility. Oh, and being toxic immune is always great.
Kommo-o to A: Still a strong utility pivot/breaker. Speed tier is fantastic and its kit in general brings a lot to the table. Also, highest winrate of any 5+ usage mon at 87.5% wins in 8 uses.
Vikavolt to A: Almost always gets a kill with its Nasty Plot set, and has enough bulk to set up reasonably.
Porygon-Z to A-: This guy sweeps. Also, it benefits a ton from Pinch being everywhere.
Mega Metagross to A-: Blizzard is always a terrifying thought for any Toucannon trying to check base Metagross. Having its base be as strong as it is alone boosts the viability of this guy significantly.
Swampert to B+: It gets up rocks easily, as most removers don't particularly appreciate its STAB combo and/or Scald burns. Poison Heal is so good
Ninjask to B+: At the end of the day it's still the anti-fast measure it always was, and sees a higher amount of usage than its original ranking would reflect.
Audino to B-: Just theorymon, but it probably works well enough in this meta as long as it packs Toxic, Moonblast, and (maybe) Fire Blast. Offensive variants could be neat (toxic/moonblast/psyshock/fire blast?). Regardless I don't believe it's C rank-worthy.
DROPS:
Druddigon to A: He's still very solid, but nowhere near to level of pre-milotic and pre-mew metas. Lack of recovery is troubling and he doesn't block hazard removal nearly as well as he used to.
Milotic to A: Still a fine choice, but its STAB combo has been adapted to (both Forretress and Mew can take the hits). Removes hazards well but hazard stack isn't prominent in this meta with so many removers already present and removing the hazards fine, thanks to Drudd usage waning.
Meganium to A-: Doesn't quite stack up to the rest of A, and really dislikes Mega Metagross existing (not to mention it doesn't like Metagross much in the first place). Other physical pivots give it fierce competition.
Genesect to C: Drastic drop I know, but this thing just doesn't ever preform. It's a steel-type that can't touch Mew (thanks CM), doesn't synergize at all with Xurkitree, and just blows as a scarfer. Other sets become Pangoro food and at the end of the day its too prediction reliant and mostly just spams U-Turn lest it gets destroyed by Trapinch. It's ass
Xurkitree to B+: If you want a CM sweeper, you use Mew. If you want an electric pivot, you use Raichu. If you want a devastating electric wallbreaker, use Vikavolt, which doesn't even use electric STAB. Oh, and none of these options are nearly as Trapinch weak.
Flygon to B: Bad defensive and offensive typing that inevitably ends up walled against something (usually Nihilego). If you want a defogger that beats Drudd, use Milotic. If you want a spiker, make sure it doesn't give free spins to Nihi lol. It probably works best as a 3 attacks+roost attacker, but there's pokemon that already do that and then some, like Milotic.
Sharpedo to B+: There's much safer options at the end of the day. It usually only gets a few turns to do anything because of how frail and hazard weak it is, and ends up being very prediction reliant due to that. Not to mention that the 4th moveslot has gotten even more difficult to pick due to Toxic being a tech to beat Mew, but then there's still your other hard stops like Meganium and Lanturn.
Flaaffy to B: Honestly our only stall-only mon in a mostly stall-free meta. It can work, but normal teams have better blanket physical walls most of the time (Mew and Toucan). At least it beats Toucan on stall, which is why it at least works there.
Trevenant to B: It can snap defensive cores in half, but its gotten harder to reach that point thanks to Mew and Toucannon.
Poiopole to B-: We're in a Trapinch world, my friend.
Ditto to C: This thing is pretty awful. The speed tier is nice, but it doesn't even OHKO Raichu regardless and is bar-none the most predictable Pokemon in the mod.
Rat to C: He's a pretty easy way to give your team a very tough Pangoro matchup. Being one of the few mons that can really chunk Mew though is neat, but Gleam squashes it regardless.
Kricketune to D: Webs isn't worth it