Update for December 8th
Scolipede will be unranked since it was banned.
Thanks for being patient.
As always, feel free to discuss if you feel like your points were not fairly addressed. The next update is going to be very big most likely, since we have never went through the whole list one by one as we will be doing next time. This will be after the tier shift. Feel free to discuss anything, no main discussion points. Two new S rank Pokemon are obviously the biggest changes in this update.
Rises
Azumarill A → S
Rising because it has a new toy in Perish Song + Whirlpool + Sap Sipper, which individually is easily enough dealt with, but when considering it has the extremely dangerous Huge Power sets, Azumarill becomes a guessing game for its first turn. Meanwhile, all sets can abuse its nice typing both offensively and defensively.
Serperior A+ → S
Like Azumarill it has a combination of sets that leave it no reliable switch ins, apart from random Sap Sipper Pokemon. The lack of initial power is made up from the good power after a boost and average bulk at onset.
Blissey B+ → A-
Stall is becoming dominant and Bissey is the queen of stall, basically used on 100% of all stall teams. She fits so easily because she can provide either Heal Bell or Stealth Rock support in addition to walling a large amount of special attackers, which gives near perfect synergy with Alomomola and Quagsire, two other (slightly less common) stall staples.
Amoonguss A- → A
It checks or counters many of the top Pokemon like Rotom-Wash and Serperior and can be used on a wide variety of styles since its ability and movepool lets it keep up a relatively fast paced for a defensive Pokemon. Appreciates to some extent a fall in Klefki.
(Alolan Sandslash) UR → A-
Auroros UR --> A-
Aurora Veil teams are popping up again and these two Pokemon are integral to their success to set up the screens. This is a strong style because it allows easy set up for dangerous threats like Scizor, Latias but also lesser used Pokemon like Kommo-o.
Rotom Cutter C+ → B-
Defog is a new and good option for Rotom-Cut since it beats most of the SR users with a few notable exceptions (Gliscor, Blissey). Besides that, it still functions on Volt-Turn cores well despite competition from mainstream Electric types.
Altaria Mega A → A+
Newfound place on some stall teams, a stall Pokemon that can beat Whirlpool Azumarill is quite interesting. Refresh sets and different types of DD sets in general are seeing something of a resurgence, and since they are more dangerous than nonboosting sets, Altaria is rising.
Seismitoad B+ → A-
Eclipsing Swampert in terms of roles because of the good matchup versus Rotom-Wash.
Kyurem B → B+
Two main sets are responsible for the rise - Choice Specs and Substitute Roost. Both can easily wear down and outlast typical checks, particularly if they try to counter you. Scizor, Muk Alolan and Azumarill all are easily worn down. Also, Kyurem has a relatively easy time coming in because of how common Gliscor and a few other Pokemon are.
Moltres B → B+
Rising again because the potency of its defensive sets and offensive sets, which are still trending.
Florges B- → B
Florges is quicker and does not waste as much time as compared to Sylveon, HP Fire can really hurt Scizor which can outspeed and U-Turn on Sylveon. Kommo-o still exists and can potentially wall Sylveon. Overall, nearly as good as Sylveon.
Lucario C+ → B-
A very good wallbreaker hich is important because stall is rising. Nasty Plot sets in particular are hard to wall and can OHKO Quagsire with Z Focus Blast or even Life Orb Focus Blast with a little damage. Other sets are still viable. The problem is lack of bulk, average speed, and lack of power before boosting.
Hoopa C → C+
Substitute Nasty Plot sets are rising somewhat, and Hoopa in general are liking a small rise in Sticky Web teams.
Haxorus C+ → B-
Benefits from Kommo-o gone, breaks stall.
Drops
Sharpedo Mega A+ → A
It is seeing increased competition from Megas, Manectric in particular has been rising. Also, Spikes is not as good as before which deprives Sharpedo of some support.
Swampert A- --> B+
Switching places with Seismitoad since it cannot deal with Rotom-Wash as easily.
Klefki A → A-
Spikes offense is falling out of popularity, proabbly because of increase in Defog. Klefki's defensive utility is good, but often not totally reliable due to lack of good recovery.
Slowbro B- → C+
Nobody uses it and it will fall more unless somebody defends it. Screwed up by Volt-Turn.
Kommo-o A+ → B-
It can still do work despite losing Z-Clanging Scales. It is especially good as a boosting attacker on Aurora Veil. However, SR is also a nice support move which it can even use in conjunction with boosting moves a la Cobalion.
Zygarde B+ → B
Two reasons for the drop - VoltTurn is relying more and more on Manectric Mega over Rotom Wash, which is a much worse matchup for Zygarde since they run HP Ice most of the time. Also, Spikes offense which Zygarde enjoys being placed on is falling as a playstyle.
Scolipede will be unranked since it was banned.
Thanks for being patient.
As always, feel free to discuss if you feel like your points were not fairly addressed. The next update is going to be very big most likely, since we have never went through the whole list one by one as we will be doing next time. This will be after the tier shift. Feel free to discuss anything, no main discussion points. Two new S rank Pokemon are obviously the biggest changes in this update.
Rises
Rising because it has a new toy in Perish Song + Whirlpool + Sap Sipper, which individually is easily enough dealt with, but when considering it has the extremely dangerous Huge Power sets, Azumarill becomes a guessing game for its first turn. Meanwhile, all sets can abuse its nice typing both offensively and defensively.
Like Azumarill it has a combination of sets that leave it no reliable switch ins, apart from random Sap Sipper Pokemon. The lack of initial power is made up from the good power after a boost and average bulk at onset.
Stall is becoming dominant and Bissey is the queen of stall, basically used on 100% of all stall teams. She fits so easily because she can provide either Heal Bell or Stealth Rock support in addition to walling a large amount of special attackers, which gives near perfect synergy with Alomomola and Quagsire, two other (slightly less common) stall staples.
It checks or counters many of the top Pokemon like Rotom-Wash and Serperior and can be used on a wide variety of styles since its ability and movepool lets it keep up a relatively fast paced for a defensive Pokemon. Appreciates to some extent a fall in Klefki.


Aurora Veil teams are popping up again and these two Pokemon are integral to their success to set up the screens. This is a strong style because it allows easy set up for dangerous threats like Scizor, Latias but also lesser used Pokemon like Kommo-o.
Defog is a new and good option for Rotom-Cut since it beats most of the SR users with a few notable exceptions (Gliscor, Blissey). Besides that, it still functions on Volt-Turn cores well despite competition from mainstream Electric types.

Newfound place on some stall teams, a stall Pokemon that can beat Whirlpool Azumarill is quite interesting. Refresh sets and different types of DD sets in general are seeing something of a resurgence, and since they are more dangerous than nonboosting sets, Altaria is rising.

Eclipsing Swampert in terms of roles because of the good matchup versus Rotom-Wash.
Two main sets are responsible for the rise - Choice Specs and Substitute Roost. Both can easily wear down and outlast typical checks, particularly if they try to counter you. Scizor, Muk Alolan and Azumarill all are easily worn down. Also, Kyurem has a relatively easy time coming in because of how common Gliscor and a few other Pokemon are.
Rising again because the potency of its defensive sets and offensive sets, which are still trending.
Florges is quicker and does not waste as much time as compared to Sylveon, HP Fire can really hurt Scizor which can outspeed and U-Turn on Sylveon. Kommo-o still exists and can potentially wall Sylveon. Overall, nearly as good as Sylveon.
A very good wallbreaker hich is important because stall is rising. Nasty Plot sets in particular are hard to wall and can OHKO Quagsire with Z Focus Blast or even Life Orb Focus Blast with a little damage. Other sets are still viable. The problem is lack of bulk, average speed, and lack of power before boosting.

Substitute Nasty Plot sets are rising somewhat, and Hoopa in general are liking a small rise in Sticky Web teams.
Benefits from Kommo-o gone, breaks stall.
Drops
It is seeing increased competition from Megas, Manectric in particular has been rising. Also, Spikes is not as good as before which deprives Sharpedo of some support.
Switching places with Seismitoad since it cannot deal with Rotom-Wash as easily.
Spikes offense is falling out of popularity, proabbly because of increase in Defog. Klefki's defensive utility is good, but often not totally reliable due to lack of good recovery.
Nobody uses it and it will fall more unless somebody defends it. Screwed up by Volt-Turn.
It can still do work despite losing Z-Clanging Scales. It is especially good as a boosting attacker on Aurora Veil. However, SR is also a nice support move which it can even use in conjunction with boosting moves a la Cobalion.
Two reasons for the drop - VoltTurn is relying more and more on Manectric Mega over Rotom Wash, which is a much worse matchup for Zygarde since they run HP Ice most of the time. Also, Spikes offense which Zygarde enjoys being placed on is falling as a playstyle.