Azumarill: A+ or A
Gengar: A or A-
Mew: A or A-
Kabutops: A- or B+
Diggersby: B+ or A-
Espeon: B- or C+
Xatu: B- or C+
Azumarill: A+, scary to switch in, Amoonguss is the only switch in that actually can do something against the Liquidation/Jet/Superpower/Play Rough set, can always run Knock Off or Ice Punch against it though, Belly Drum can be scary if mons Like Rotom-Wash are weakened, or basically anything thats faster and that resists Jet. imo it can run way too many things (maybe even Z-Bdrum soon:tm:, way too strong to be only in A.
Gengar: A, same situation as Azu. If you lack a Pursuit trapper, its almost as good as it was back then. There is not a single ground type thats on every team, and usually that ground type was and is able to touch Gengar with something else than EQ (pls don't come with the Levitate arugment, ty.) It's exremely powerful with Life Orb and hazards support, ferro cant really switch into it, especially when you run focus miss. most of the teams dont have a switch in to the Shadow Ball/Sludge Wave/Focus Blast core, can always predit the switch in if you see a ttar, can always taunt a clefable/blissey/chansey to prevent being paraed or w/e, Destiny Bond is a nice nieche move that can even beat Bisharp 1v1.
Mew: A-, only viable set is the stallbreaking set, that gets completly walled by heatran that is on most common stall teams (idk why lol), too bad in the current meta imo.
Kabutops: B+, only physical rain abuser, but imo you dont even need a physical rain abuser, i would rather have something fast that doesnt get worn down that easily, because you NEED Life Orb to actually do damage.
Diggersby: A-, completly underrated mon. Choice Band on it has no switch ins, has the option to run Fire Punch to hurt Skarm and Ferro on the switch in, Eq is a pretty much spamable move, especially when rotom wash is their only Ground immunity (just Frustration predict him and it's gone), Gengar cant really switch into it the way ti was able to before, Quick Attack is always nice to help against azumarills, latios and what not.
Espeon: C+, completly trash with TP, Gyro from Ferro or other rocks setter can punish it easily upon switch in, way to frail to actually do stuff
Xatu: B-, semi bulky, has access to reliable recovery with 16 uses, can set up, kinda walls ferro, is hard to revenge kill if you lack a weavile or something faster, cant get worn down by toxic or crippled by twave, not the worst mon, used to be better, though