Wildcat Formation
flexibly adaptable to the situation
I agree with Tyranitar moving up to A+. Scarf T-tar is so good at Pursuit trapping that it can be used on offense, balance, and stall teams. That alone makes it at least A rank imo, but the rising Chople and Choice Band sets are why it is deserving of A+. Support T-tar is a reliable Stealth Rock setter that can beat one of the biggest threats to Sand teams in M-Alakazam thanks to Chople Berry. Band T-tar can break bulky teams with its powerful STABs when it switches into electrics and other BoltBeam Pokemon like M-Latias or BoltBeam Clefable. Sand is really strong right now so a rise for Tyranitar makes sense.
I'm also curious to if Thundurus should remain A+. The high usage of sand teams has made Electric types worse. Thundurus has always been considered the premier Electric Pokemon thanks to its wide coverage along with Prankster Thunder Wave. However, I think Thundurus's best set in the current meta is Nasty Plot + 3 attacks, a set that does not have Prankster T-Wave. The extra coverage move whether it is Focus Blast or Grass Knot allows Thundurus to put in work against bulkier teams in a way Nasty Plot + Thunderbolt + HP Ice + T-Wave cannot. I don't think LO 3 attacks + T-wave is that good currently since it gets worn down too quickly and is easier to check. Is the Nasty Plot set good enough to keep Thundurus in A+? I'm not sure. Speaking of Electric-types...
Again, Electric-types have gotten worse with the prevalence of sand. When Thundurus's best set currently is Nasty Plot, there is even less reason to use Thundurus-T. Its speed tier is rather unfortunate especially since offensive Garchomp is making a return. I think every Pokemon that is B- bar Empoleon is easily better than Thun-T, even some C+ Pokemon like Nidoking. Drop to C+.
I wonder how you guys feel about this. I might be missing something, but I don't see how Ferrothorn is better than Skarmory by one subrank. I'm comparing these two because they are both bulky Steel-types that learn Spikes. I think Ferrothorn's lack of reliable recovery cannot be ignored. Ferro highly appreciates Leftovers, but there are times where it needs to hold a Chople Berry or Shed Shell in order to do its job effectively. If Ferro is your sole Fairy check, a Shed Shell is often the better choice. If you are very weak to M-Gard or M-Zam, Chople is a good option. The lack of Leftovers can force Ferrothorn into situations where it would like to Leech Seed to stay healthy over setting up Spikes. This makes Ferrothorn easier to wear down compared to Skarmory.
Also I think Skarmory has gotten better over time. Ferro moved to A+ rank last August. That was back when Manaphy and M-Altaria were considered the top threats of OU. Neither of them are as dominant currently. Skarmory, however, is capable of taking on three of the biggest threats in OU: Clefable, Excadrill, and M-Diancie. Sacrificing Leftovers for Shed Shell isn't a big issue for Skarm because of Roost. I'm not sure if Ferro should drop or if Skarm should rise, but I do think they should be the same rank.