Cobalion definitely fits in
A+ imo. Not only is it one of the best answers to Bisharp, it is an incredibly threatening sweeper thanks to All Out Pummeling doing tons of damage to even many resists. It also does carry a surprising amount of versatility in just the offensive z move set alone, as beyond sd and stab moves, it can carry rock polish to devastate offensive teams by boosting its already solid speed tier, X-Scissor to lure in psychic types like Starmie, which otherwise hampers its ability to sweep, Stone Edge for Thundurus, although Cobalion does kind of have to hit it on the switch as it doesn't want to take a Focus Blast, or even Stealth Rock to take advantage of the switches it forces, and free up a slot on the team that would otherwise go to another mon for the sake of setting up rocks. I often find myself using Cobalion just because it pairs so well with many things in the tier, especially any psychic types that can lure in dark types for cobalion to take advantage of.
Also, I wouldn't mind maybe raising Crawdaunt to
C+. Yes, Crawdaunt is slow and can't take many hits, and while it can't really switch in easily, the same goes for most things in the higher ranks. None of the S rank mons can switch in, even azumarill is 2hko'd by banded if you click crab hammer, and obviously the others are just going to get blown away, so while they might be able to force Crawdaunt out, it has to be after a sack, as none of them want to take a hit from this thing. Hell, none of the things in the A Ranks want to switch in since Daunt can potentially blow them away with the right move, or in the case of Keldeo remove its item and make it less threatening. Not to mention that a lot of teams are relying on Amoongus and Latias as water resists, and Crawdaunt just shits on them if it clicks knock off. So why isn't this being proposed even higher, you may ask? Well, it does hate the fact that it doesn't like to switch in to others at all, thanks to its bad speed and typing, as while it can use aqua jet for some priority, and it can pick off a lot of frail offensive mons after an it of prior damage, it still struggles against offensive teams, making it a mattchup based mon. But it's honestly as good as if not better than other things in C+ which also happen to usually be matchup based, so at the very least I think it should move up to C+, as I think it is at least on par with if not better than the majority of the things in that ranking. I mean, I think that something that maims or even kills almost everything the the A ranks with its stabs alone at least belongs in C+, since unlike the dogshit in C, I can actually see a valid reason to use Crawdaunt on a serious team, and is at least on par with things like Haxorus, Snorlax, and Roserade.
Calcs for Crawdaunt:
252 Atk Choice Band Adaptability Crawdaunt Crabhammer vs. 252 HP / 0 Def Azumarill: 186-219 (46 - 54.2%) -- guaranteed 2HKO after Stealth Rock
252 Atk Choice Band Adaptability Crawdaunt Crabhammer vs. 0 HP / 4 Def Bisharp: 308-364 (113.6 - 134.3%) -- guaranteed OHKO
252 Atk Choice Band Adaptability Crawdaunt Knock Off (97.5 BP) vs. 0 HP / 4 Def Thundurus: 398-470 (133.1 - 157.1%) -- guaranteed OHKO
252 Atk Choice Band Adaptability Crawdaunt Knock Off (97.5 BP) vs. 248 HP / 252+ Def Scizor: 216-256 (62.9 - 74.6%) -- guaranteed 2HKO after Leftovers recovery
252 Atk Choice Band Adaptability Crawdaunt Knock Off (97.5 BP) vs. 0 HP / 0 Def Keldeo: 164-193 (50.7 - 59.7%) -- guaranteed 2HKO
252 Atk Choice Band Adaptability Crawdaunt Knock Off (97.5 BP) vs. 248 HP / 252+ Def Amoonguss: 270-318 (62.6 - 73.7%) -- guaranteed 2HKO after Black Sludge recovery
252 Atk Choice Band Adaptability Crawdaunt Aqua Jet vs. 0 HP / 0 Def Aerodactyl-Mega: 284-336 (94.3 - 111.6%) -- 62.5% chance to OHKO
252 Atk Choice Band Adaptability Crawdaunt Aqua Jet vs. 0 HP / 4 Def Alakazam: 230-272 (91.6 - 108.3%) -- 50% chance to OHKO
252 Atk Choice Band Adaptability Crawdaunt Aqua Jet vs. 0 HP / 0 Def Gengar: 188-222 (72.5 - 85.7%) -- guaranteed 2HKO
Again, it is matchup based, but at least it's not complete deadwieght against offends thanks to priority that can hit pretty hard. I really don't think it belongs in C, and while it might be too matchup based, and not good enough against offense which is the most dominant playstyle to be fair, I think it is too good to be lumped with shit like Kommo-O, Salazzle, and Venusaur, all of which are far more niche than Crawdaunt.