Barbaracle...in A-?
Okay I think you're literally aiming extremely high for Barbaracle. Considering how it's mediocre in NU and is barely passable in RU I don't see why it would deserve to be so highly ranked in UU. I get that it can sweep with Shell Smash but I mean why would I ever want to use this thing ever any Shell Smash user available. A prime example of another Shell Smash user in UU is Cloyster, who is currently C Rank, and has major advantage over Barbaracle because it can smash Substitutes and can also afford to go mixed with Hydro Pump, and that gives Barbaracle competition for a teamslot. I understand Barbaracle also has the ability to set up on birds and Entei and Darmanitan and has a more expansive movepool, but it needs to have a setup opportunity to be any good really, and even Omastar does way better than Barbar as a Smasher because more power. It has an awful lot of weaknesses and there's no guarantee you'll be able to set up on those aforementioned mons. Barbaracle needs way too much support for an A Rank mon, I could see it in C because I guess being able to sweep is cool, but putting it up with metagame staples in A- just isn't okay, it needs way too much support for such a high ranking.
I'm frankly going to question Medicham's placement in B- again. Frankly I don't see why I would ever want to use this thing as a wallbreaker. Even though it "2HKOes/OHKOes everything in the tier!!!" that's not really that good, and beyond that, it's strictly inferior to a load of Fighting-types in UU like Mienshao, Infernape, Machamp, even Hitmonlee, etc. all of which have better coverage or better bulk (in Machamp's case). Yeah I get Medicham hits hard but it's slow compared to Infernape and Mienshao, and the lack of Knock Off really hurts and gives it a complete inability to break things like Cresselia. Even if it does work decently I don't think it's worth using over other Fighting-types in UU, it's too frail and outclassed to be worth it imo. Being able to 2HKO/OHKO everything in the tier doesn't make it viable.
Also Florges is A- because the CM+Aroma+Synthesis set is really good. It's an impressive bulky sweeper with reliable recovery and an incredible defensive typing, holding three valuable resistances as we've all seen, and it can boost its power and become almost completely impeccable on the special side once it boosts a CM or two, which with Florges is really easy because of its bulk and typing. It can heal itself reliably which is awesome and remove status from itself, and it can hit hard with a Moonblast after it attains enough boost, which can even heavily dent Mega Aggron once that is weakened. If we're looking at the WishTect set alone, then yes, that set is B+ at best as it is only as useful as fellow WishPassers Aromatisse and Blissey, but its CM+Synthesis set puts it a notch above those two, it's a really good set and you should definitely try it: you won't be disappointed.
Idk about Goodra but I like the CB set a lot and I think that set is legit, it switches in on Shaymin and to an extent Celebi and Chesnaught really well and with CB intact its Outrage hits hard, and it crushes bulky Water-types with CB Power Whip which is awesome because bulky Waters are plentiful in this meta, having EQ and Iron Tail as coverage is also nice especially to crush Florges and Aroma with the latter thinking they can come in...Really cool stuff imo, and it still packs decent special bulk to take on stuff like Raikou and bulky Waters, which is neat. Not quite sure if it deserves higher or to stay but the CB set is kinda neat, so it could also be in the same level as stuff like Spiritomb, Diancie, and Feraligatr in B-. Idk though lol since I know Goodra has rather stiff competition as a Dragon-type, but imo I do think it's kinda legit with CB.
Okay that was longer than what I had planned to post but...whatever lol.