Rises:

Brute Bonnet
New! => A Brute Bonnet has made a big impact on the metagame with it's introduction to the tier, making Pokemon like Klefki use Safety Goggles and Revavroom use Overcoat, as well as increasing Altaria and Oricorio-Pom-Pom's usage. Spore is incredibly powerful and Brute Bonnet also boasts lots of set variety including Loaded Dice, Booster Energy, and Choice Band with lots of different options in Tera type like Fire and Poison for their defensive utility and Dark for a super-powered Sucker Punch.

Indeedee-M
New! => B Indeedee, while not as impactful to the tier upon introduction, is still a very speedy and powerful special breaker with amazing coverage in Dazzling Gleam, Psyshock, and a Tera Blast that functions as STAB even without Terastallizing as well as great utility options like Screens, Trick, and Healing Wish. Psychic Terrain benefits other Pokemon like Bruxish and Unburden Drifblim.

Gardevoir
A => A+ Gardevoir is a phenomenal revenge killing option and breaker thanks to its super powerful Moonblast and great coverage coupled with Trace to keep weather sweepers in check and pivot into top tier threats like Slowbro and Kilowattrel. Choice Specs feels similar to Toxtricity in the sense that assuming it uses the right move, it will pick up a KO every time it comes in. This high praise can be reflected through its usage and winrate seen in RUPL so far (number 5 in usage as of week 3).

Klefki
A => A+ Klefki boasts one of the best typings and ability in the game, with a phenomenal movepool to back it up. Its Steel typing allows it to check many Pokemon including the 3 mentioned above it here, and its natural bulk lets it get away with using many different items including Safety Goggles, Shuca Berry, and Toxic Orb + Switcheroo. Toxic Orb and Thunder Wave are great contingencies for setup sweepers and the highly coveted Spikes and a positive matchup into many hazard removers like Altaria and Cryogonal makes Klefki an amazing user of both of these moves. Klefki can also use a Calm Mind + Iron Defense set with Stored Power and Draining Kiss to unexpectedly destroy bulky teams.

Krookodile
A => A+ Similarly to Gardevoir, Krookodile's RUPL performance has been nothing short of dominating (top 3 in usage as of week 3). Choice Scarf Moxie sets can snowball incredibly quickly due to the lack of common Ground immunities and Krookodile's amazing speed tier. Choice Band sets break very well due to Krookodile's amazing STAB combination and great coverage in Gunk Shot, Close Combat, Stone Edge, and Aqua Tail. Krookodile also has Intimidate and solid bulk to be a great Stealth Rock setter and can even Taunt common Defog users like Altaria and Oricorio-Pom-Pom.

Oricorio-Pom-Pom
A => S- Oricorio-Pom-Pom has taken the tier by storm recently, with lots of set development to its sets allowing it to effectively beat any of its supposed checks in a 1-on-1. Defog sets make use of its fantastic defensive typing, but Quiver Dance makes Pom-Pom considered "broken" by the community because even without Tera, its amazing set diversity enables it to set up very reliably and threaten most of the tier with powerful Hurricanes and stay healthy with Roost.

Heracross
A- => A In a metagame dominated by Slowbro and other physical walls like Mudsdale and Altaria, Heracross sets itself apart from other Fighting-types like Passimian and the late Flamigo as a breaker that can very easily break through these with its raw power and coverage. Heracross can also benefit from an ally breaking, and become a sweeper with a Choice Scarf or Trailblaze, and even set itself up for success by laying down Spikes prior. Heracross often has to pick-and-choose its coverage and thus what it loses to, often dropping a move for either Flying- or Ghost-types but even without a super-effective Stone Edge or Night Slash, a potentially Tera and Guts-boosted Facade easily destroys Flying-types like Kilowattrel and Altaria, and a Tera Trailblaze destroys Mismagius and Palossand, while Mega Horn nukes Sableye, which can't do much back to Heracross regardless.

Altaria
B+ => A- Altaria has cemented itself as arguably the best Defogger in the tier, and at least takes the title as the most consistent one, due to its positive matchup against common Stealth Rock setters such as Mudsdale and Copperajah. Despite its passive facade, Will-O-Wisp in a generation without Heal Bell, and high BP moves like Brave Bird and Hurricane or its trapping set with Fire Spin and Perish Song make Altaria quite a pain for offensively-oriented teams to deal with, while defensive teams struggle to even threaten Altaria in the first place. Natural Cure and reliable recovery are the cherry on top for Altaria's phenomenal defensive profile, making it the queen of the war of attrition.

Cetitan
B+ => A- Now *I've* been saying Cetitan is nutty since Alpha, and it seems everyone else has finally caught up to this idea. If Cetitan gets a Belly Drum off, it wins. Typically Belly Drum Pokemon struggle to pull off the move without dying, but much like Hariyama who resides in RUBL, Cetitan has absurd bulk which is only further bolstered by Snow's defense boost and a potential Aurora Veil. With both Tauros-Paldea forms and Alomomola rising out of the tier, Cetitan finds itself in an amazing position to consistently pull off sweeps if supported properly.

Copperajah
B+ => A Copperajah is a perfect mixture of offense and defensive utility, boasting naturally high BP moves like Heavy Slam, Earthquake, and Stone Edge with a high base attack, backed by an amazing HP stat and access to Stealth Rock and Whirlwind to keep Pokemon like Oricorio-Pom-Pom and Revavroom in check. Copperajah sits at #8 in usage in RUPL as of week 3.

Passimian
B+ => A- Passimian definitely appreciates Flamigo being banned, but beyond direct competition, Passimian also boasts better natural coverage with moves like Gunk Shot for Sylveon and Tera Fairy Slowbro, Earthquake for Poison-types, and Knock Off to hit Ghost-types (not that Flamigo had an issue with that) but Knock Off also greatly hampers the ability of Flying-types like Altaria and Oricorio-Pom-Pom from consistently checking Passimian when Stealth Rocks are up.

Sylveon
B+ => A- Sylveon's amazing special bulk and Calm Mind let it check special boosters like Oricorio and Frosmoth in a vacuum, and offensive sets that make use of Tera Blast for constant STAB are incredibly difficult to manage. Wish keeps very common teammates like Copperajah and Mudsdale healthy throughout games and can sweep very easily with offensive Calm Mind sets or blow through teams with a Choice Specs.

Weavile
B+ => A+ Similarly to Cetitan, Weavile lost some of its most consistent checks at the beginning of the month in both Tauros-Paldea forms and Alomomola. Weavile's amazing speed tier and sheer power with either a Choice Band or after a Swords Dance, especially with Tera make it feel nearly impossible to manage late game, especially if you don't have your own Tera to use against it. Tera Ground has seen use to OHKO Klefki and Copperajah after a Swords Dance while blocking Volt Switch from the likes of Bellibolt, Kilowattrel, and Choice Scarf Rotom-C, but Tera Ice Shard puts out insane damage output, KOing Choice Scarf users like Gardevoir, Mismagius, and Krookodile once boosted. Despite Weavile's poor bulk, the RU metagame often gives it many opportunities to set up a Swords Dance, being able to tank one hit from common Pokemon like non-Body Press Slowbro and Mudsdale, Oricorio-Pom-Pom, Sableye, Blissey, and Palossand. Weavile also sits comfortably at number 10 in usage in RUPL as of week 3.

Toxicroak
B => B+ Toxicroak finds many OHKO thresholds after a Swords Dance, and many opportunities to pull of a Swords Dance thanks to its unique defensive profile, notably a Water immunity and the Poison typing. Toxicroak often makes use of a Tera Sucker Punch to clean up late-game after breaking with its raw high BP moves and potentially poisoning checks like Mudsdale, Palossand, and Slowbro. Tera Dark is immune to both of Slowbro's STAB moves and sets up on Sableye as well. Toxicroak lost both competition and one of, if not, its most prominent revenge killer in Flamigo

Qwilfish
C => C+ Qwilfish can make use of two amazing abilities with a great defensive typing and access to highly coveted moves like Spikes and Toxic. Intimidate allows Qwilfish to check physical attackers like Weavile and Copperajah and set up Spikes or damage them. Poison Point can punish the infamously unpunishable U-turn and also avoids activating Passimian's Defiant.

Scyther
C => C+ Scyther forces a lot of switches and can capitalize by either using Defog or Swords Dance to sweep. Tera Trailblaze can snowball quite easily, hitting Pokemon like Mudsdale, Slowbro, and Palossand super hard after Technician and using other high BP moves like Technician Aerial Ace and Close Combat.

Magneton
UR => C Magneton proves to be quite difficult to switch into, if you're able to switch at all. It has a great defensive typing that can be complemented with an Eviolite, and both Analytic and Magnet Pull can force lasting damage on special walls like Revavroom, Copperajah, and Blissey safely with Volt Switch. Tera can allow Magneton the coverage needed to completely remove some Steel-types like Revavroom, which can be the deciding factor for some setup sweepers like Venomoth or Sylveon.
Drops:

Mudsdale
A+ => A Mudsdale often has to choose what it's able to hit, often being blanked by Flying-types even if it does have Stone Edge, and struggling against tier staples like Slowbro and Rotom-Mow while lacking the recovery to consistently check physical monsters like Heracross and Krookodile, even facing direct competition from Krookodile as a Ground-type. Specially defensive sets have become more common to help combat Pokemon Oricorio-Pom-Pom and Gardevoir, but ultimately Mudsdale finds itself being quite overwhelmed to be worth A+.

Bellibolt
A- => B+ People just learned how to deal with Electromorphosis. Despite Acid Spray and Muddy Water and Volt Switch, Bellibolt finds itself being a liability against many teams, especially setup sweepers, and its reliance on Leftovers to facetank like its meant to do makes it extremely vulnerable to entry hazards and the common setters like Mudsdale and Copperajah.

Palossand
A- => B+ Palossand really struggles to keep Stealth Rocks up, and its passivity really shines through after that. Palossand is vulnerable to many common attacking types in the tier, and its bulk is good enough to avoid many 2HKO's but it
has to Shore Up and lose all momentum afterwards.

Primeape
A- => B+ Even with an Eviolite, Primeape's bulk is still average at best, making accruing Rage Fist boosts while staying healthy enough to capitalize on the boosts extremely difficult and situational. Rage Fist can still dunk on bulky teams in the right matchup but on average Primeape takes too much effort for the potential payoff.

Barraskewda
B+ => B Manual rain is very weak in a meta with Slowbro, Altaria, and other common Water resists along with Snow being both better and directly beating Rain teams in a 1-on-1.

Bombirdier
B+ => B People have realized Bombirdier's tools are not worth its poor stats.

Floatzel
B+ => B- See Barraskewda.

Froslass
B+ => C+ Spikes alone are not valuable enough to warrant an entire teamslot to set them up

Naclstack B+ => B

Sableye B+ => B

Umbreon B+ => B

Avalugg B => C+

Ditto
B => B- Most setup sweepers like Oricorio and Revavroom can beat a copied version of themself.

Golduck
B => B- See Barraskewda.

Mabosstiff B => C+

Sandaconda B => C+

Vaporeon B => B-

Arcanine B- => C+

Charizard B- => C

Drifblim B- => C

Dudunsparce B- => C

Honchkrow B- => C

Oricorio-F B- => C

Vespiquen B- => C+

Beartic C+ => C

Clawitzer C+ => C

Crocalor C+ => C

Lurantis C+ => C

Scovillain C+ => C

Veluza C+ => C

C+ => UR


C => UR
Not much else to say about a lot of these lower rank Pokemon, they were just overrated in the first place