My turn!
A+ -> A-
Alcremie isn't as good as it used to. It very rarely sweeps or breaks, and Clefairy is most of the time a better option due to its superior utility and ability in a Spike heavy metagame.
A+ -> A
Tangela is still good, but it's not near as mandatory as it was. It gets abused by a lot of new trends like Thievul and Throh and in a Spike heavy metagame, it struggles to forgoe Synthesis. It also faces heavy competition from Eldegoss.
A+ -> S
I think those two are apart anything else in the tier. Some posts already explained my opinion on Rotom, while Sawk is the best Choice Scarf user in the tier, one of the best wallbreaker between CB and BB, and a very potent Knock Off user.
A -> A+
I think this mon got underrated when we first ranked it. Alolan Sandslash's ability to setup Spikes is unmatched and defensive sets can easily keep them up. While offensive sets have very few switch-ins, Choice Band Triple Axel is a nuke and Earthquake nails common Ice-resists like Rapidash and Perrserker.
A- -> A
A -> A-
I think both need to switch their places, Kangaskhan's superior bulk isn't as good as Cinccino's superior Speed where it is extremely important to outspeed Silvally formes and Jolly Sawk.
A- -> B
C+ -> A-
Gurdurr is still not bad, but Throh fits so much more. The superior special bulk letting it handle Rotom and Tangela, but Throh mostly shines within Spikes stack team which are on the rise due to its incredible ability to dish out Knock Off and phaze foes.
to A
i cba to explain why these Pokemon are amazing. Just check ZUPL replays and stats and you'll see why that these Pokemon are amazing. Clefairy is the sole Fairy-type you really want to use and is extremely customisable. Cofag is more than ID sweeper, RestTalk sets are great blanket physical check that are very hard to offensively abuse and the best spinblocker now that Jellicent left. Eldegoss is a better Tangela in a lot of situations because it isn't as weak to special attackers, especially Thievul and can spin on a lot of stuffs.
A- -> B
Pivot Uxie is garbage like it has been for months, but in a metagame with so many phazing, Steel-types, and Dark-types, Nasty Plot Uxie isn't even that good.
A- -> A
I was wrong, Qwilfish is still amazing because Spikes are great. This Pokemon performed extremely well during ZUPL, should be a no-brainer.
A -> A+
Wishiwashi does so much, being able to take advantage of almost any passive foe, absorbing status, and checking threatening attackers like Rhydon. I feel like nothing really changed for Wishiwashi, but I think it is the single best purely defensive Pokemon in the tier.
B+ -> B-
It is a defensive Pokemon that can't heal, has 0 offensive pressure, loses to every hazard remover, can't absorb status or Knock Off, weak to Spikes, ... I really struggle to fit this Pokemon in any team, especially since Piloswine and Rhydon are two great Ground-types.
B -> B+
More people experienced with Thievul + Perrserker during ZUPL and this core is nasty at breaking. Rapidash getting worse and Jellicent leaving also help it as it makes two of its best counters less common. Overall, Perrserker has just been a staple on voltturn teams this zupl.
B- -> B+
This mon made nasty things during ZUPL as it seemed everyone had forgot about it and Tangela is getting less usages at the favor of physically defensive wishiwashi and eldegoss.
C -> UR
It doesn't trap anything anymore. Audino left, Ferroseed left, Alcremie isn't used as much as before, Grassy Seed sweepers got banned, Clefairy runs Teleport more often than not.
C- -> B-
A big jump for the hat, however non Rest-Talk sets are really cool due to them negligating every common hazards setter (qwilfish, rhydon, piloswine, sandslash). Healing Wish is also extremely potent for most offense and Hattrem just found a new archetype to shine in.
B- -> B
Just like Qwilfish and Snowslash, Coal is really good because Spikes are amazing because hazard control is kinda lame at the moment. Jellicent leaving also helps it a ton because now teams struggle a lot more to spinblock it.
A -> A-
I've built a lot around Rapidash during this ZUPL and I have to say it isn't as good as it used to. It gets checked by so much and it is more of a Pokemon you put at the end of your balance team to fix weaknesses to Alcremie and Frosmoth than anything.
I also agree that Thievul, Unfeant, and Basculin should rise and some other stuffs too. Pincurchin and Silvally-Fighting are unmons though, they have nothing to do in B ranks and are more disappointing than anything.