Despite now being unranked, I will leave a post anyway and nobody can stop me
Dragapult spearheads offense in this tier; nothing more, nothing less. It is adorned with a nearly unparalleled speed tier, incredible coverage, pivoting, and status in order to force progress, and is a very powerful Pokemon with a monstrous combination of Ghost- and Dragon-type STABs (which in of themselves are customizable depending on the set). However, despite being top tier in its own right, it is also an unparalleled enabler with access to U-turn and the ability to play around very exploitable Pokemon (such as Mandibuzz and Blissey) to support a myriad of offensive cores, while also being able to shut down a majority of HO cores single-handedly and force egregious adaptations on Balances and Offenses to have a feasible matchup against it. There's not much more for me to say about Dragapult that hasn't been said already. It has the centralization, polarity, and versatility to be worthy of S tier in my eyes.
Kyurem: A to A+.
Kyurem is a Pokemon that defines quite a bit right now in the current metagame, especially without Zamazenta-C around. In spite of its speed tier, it is a Pokemon with nearly unparalleled stallbreaking and wallbreaking capabilities, enforcing adaptations that can be very easily exploited, or in some cases even overwhelmed regardless. Heavy-Duty Boots, Freeze-Dry, and the bans of Magearna and Cinderace were a perfect storm of changes for it that let quite a bit of its rather staggering attributes stand out, such as its offenses, resistances, and bulk.
1: Choice Specs
There's little to talk about with its Choice Specs variant. Although I see it as one of the tier's most excruciating wall breakers, I think its speed tier and Stealth Rock weakness do make it pretty manageable and require the Kyurem user to carefully position it in order to do its job. However, this being said, it is incredibly hard to actually answer once it does get a wallbreaking opportunity. The addition of Freeze-Dry tremendously decreases the range of Pokemon viably able to stomach its STAB Ice-type moves, only really limited to Scizor, Jirachi, Aegislash, SpDef Corviknight, and SpDef Clefable. Blissey and Heatran are willing to soak its Ice-type moves but embarrassingly fold to Focus Blast, and Jirachi/Aegislash want no part in stomaching Earth Power. Its best counterplay is either a Scizor, Jirachi, a healthy SpDef Corviknight, Clefable, or winning 50/50s. With apt team support, this can prove to be even more middling, as it pairs very well with a majority of the tier's premier offensive pivots, such as Rillaboom, Urshifu-Rapid-Strike, and Tapu Koko. Its sheer strength is also capable of overwhelming a majority of checks given that they either need to be healthy or outright lack reliable recovery. However, its Choice Specs set is not why I believe Kyurem is deserving of a rise, in spite of being a very polarizing wallbreaker that needs to be prepped for.
I believe Kyurem deserves a place in A+ because of how effective its SubRoost set is. This set takes a bit more of a different angle, playing much more into the traits that make Kyurem stand out as an individual Pokemon. Not only is Stealth Rock seldom an issue with Heavy-Duty Boots, but it is great at using Pressure and its literally perfect neutral coverage in Freeze-Dry + Earth Power to keep a majority of the tier at bay, and then using its bulk, Pressure, and longevity in order to PP stall the things that should on paper beat it such as Blissey, before paving the way for a teammate or even itself to exploit the rest of its team. It is superb at taking advantage of many of Specs' checks using this set, being only really dissuaded by Scizor in a vacuum. Even if it foregoes the occasional Icicle Spear for the generally superior Earth Power, it can still easily drain Blissey of its Seismic Toss and status as the tier's most effective Pressure user, too.
Since more defensively inclined Pokemon are somewhat inconsistent in handling it, Kyurem's best answers come in the form of offensive checks which are able to outspeed and threaten it out, but this also requires the Kyurem's Substitute to be down (unless the opponent's offensive check is Scale Shot Garchomp), meaning Kyurem can force crucial chip damage before being forced out in most cases. It's really difficult to check this set reliably, and it's probably one of the best, yet most unique progress enforcers in the tier for long-term battles and is a premier Balance proponent that can do incredible work even with good preparation.
On the topic of very difficult-to-handle offensive threats, I think Kartana is the
most devastating wallbreaker and win condition in the tier, boasting ungodly strength and the ability to completely overload what in theory should check it. Most airborne Pokemon that soft-check it are easily exploitable and with Knock Off can be overwhelmed with little to no sweat. In spite of not having a STAB boost, Knock Off removing Heavy-Duty Boots can critically impair would-be checks like Mandibuzz and Zapdos and leave them easily overwhelmed in the long term with Stealth Rock support.
With Swords Dance, its pool of answers falls solely to Buzzwole once it gets a boosting opportunity, making it monstrous on Hyper Offenses where it can find many setup opportunities and can be supported with Screens. Kartana also boasts a great typing and ungodly physical bulk that it takes very good advantage of for setup and switch-in opportunities alike. Choice Band on the other hand has a very small pool of switch-ins in its own right due to the nuclear immediate power, making it incredibly difficult to safely swap in as its damage output is blatantly absurd and cleaves past what in theory should be able to keep it contained. Beast Boost alongside both sets is practically just overkill and can further help it seize games (especially with a Choice Scarf)
Kartana's sole weakness at the current time is horrible special bulk and a speed tier that is eclipsed by common forms of speed control which leaves it very vulnerable to revenge killing. However, this being said, its general lack of consistent defensive answers that aren't from an extremely small pool of Pokemon, alongside having a speed tier that eclipses a majority of the tier, make it incredibly difficult to answer and is something that almost always is capable of piercing major holes into even prepared teams.
Urshifu-R is a superb offensive pivot with incredibly powerful STABs and the ability to play around its switch-ins. As a Fighting-type with immediate power, a fairly good defensive typing, and access to a multi-hit signature move that guarantees critical hits, it carves a fantastic niche as a wallbreaker, offensive pivot, and a phenomenal anti-lead against offenses respectively. Surging Strikes with a Choice Band is incredibly difficult to switch into without a dedicated resist and even said resists are able to be pivoted around and taken advantage of with U-turn, making Urshifu-R phenomenal at both forcing damage and gaining momentum for more offensively inclined teams. Although it despises contact recoil (though can slot in Protective Pads for both Bulk Up and U-turn), its ability to take advantage of many Pokemon in general makes it a phenomenal pivot and even a potent win condition, which is a huge reason I believe it is worthy of a rise.
to A (or A+)
The matchup moth has become reached its final form as the murder moth. It is the most customizable, most potent win condition in the tier that is able to freely pick what it wants to beat without withholding its potential. It has a small pool of immediate answers that it can eventually eclipse with access to Flame Body and Quiver Dance boosting 3 stats simultaneously to give it room to play with its EV spreads and moves without shivving its cleaning potential, while also being surprisingly easy to support with a myriad of potent offensive pivots to give it plenty of setup opportunities.
What I enjoy the most about Volcarona as a win condition is that it can play with a lot of options.
It can choose to make use of its dual STABs and Psychic to quickly do its job and cleave past Haze Toxapex; it can use a bulkier Safeguard + Roost set to use Blissey as setup fodder; it can even run Roost + 2 attacks to play into its typing and Flame Body to find even more set up opportunities. Its only real counters are defensive Dragonite and Heatran, the former of which needs Multiscale to keep Volcarona contained, and the latter being exploitable and prone to being overwhelmed against offenses. Although a lot of people talk a lot about Volcarona being a matchup Pokemon, I believe the fact that it's so customizable, allowing for different kinds of adaptations and cores to be run while being efficient all the same, and has the ability to claim games so forcibly makes it a Pokemon well worth being higher than A-, and possibly even being a contender for A+. Although it needs support, any good cleaner needs conditions to be fulfilled before they can do their job, and Volcarona's requirements are much less demanding than others.
Aegislash fulfills a very fascinating niche in part to its great defensive typing and Stance Change letting it perform as a surprisingly potent offensive check to a lot of different things. I won't talk too much about its offensive sets as they have been mentioned to death and are all very solid for reasons stated before, but a set I find to be very underrated and would like to briefly mention is its SubToxic set, which alongside its defensive typing and King's Shield, can be a superb status spreader and an egregious wall capable of whittling down a majority of Balances with proper pivoting support and a team able to capitalize. I think Aegislash's longevity can be an issue, but it 100% should be risen, in short.
Other things I agree with:
A- to A
B to B+
B to B+