I wouldn't exactly call Cradily S. Of course, this is all dependent on what kind of Cradily you're facing, as I can't see a 100% counter either.
Absol can still 2HKO it after one Curse with a Choice Band, for instance, unless it runs Counter or Barrier than can potentially screw Absol up. Even then, Taunt or Substitute can completely set up on Cradily lacking an attack. Similarly SubPunch Pokemon especially those that run STAB such as Primeape/Poliwrath can also prove to be problematic for it, although you could say these sets aren't that common. Given how common it is for Cradily to run Recover, Toxic usually stops it from doing too much and Rest comes with the whole Sleep drawback, although it isn't to say it's not hard to stop as well. Generally, you also have 4MSS on this thing and your dedicated sets do very different things. Let it go out of hand and it can screw you up, but it's not something that gets unstoppable after one Curse.
As for Hitmontop, stuff like Zangoose and Sharpedo in the tier inevitably make it very significant as a pivot with this power creep, alongside being a good Glalie counter, but I wouldn't call it flawless. Bulk Up isn't an effective way to defend against the physical attackers either, because they could just set up alongside you when you're forced to Rest or when they predict it. At the same time, it's mix of offensive and defensive roles seem appealing, but it also comes with a case of 4MSS/limited movepool. Maybe that doesn't matter because its enough to do work, I guess. Considering a defensive set of RSpin/Toxic/Rest/Fighting move, you're complete fodder for Poison types like Nidoking, making your check work not as effective as you'd like unless you run EQ. Hitmontop is thusly also heavily reliant on Wish/cleric support unless it runs Rest itself, since it can get worn down by Choice Band Attacks still; this also relates to the fact that you sometimes have to switch into Spikes damage to get rid of them which further affects its longevity throughout matches.
-1 252+ Atk Choice Band Sharpedo Waterfall vs. 252 HP / 252+ Def Hitmontop: 54-64 (34.3 - 40.7%) -- 59.9% chance to 3HKO after Leftovers recovery
-1 252 Atk Choice Band Zangoose Return vs. 252 HP / 252+ Def Hitmontop: 60-72 (38.2 - 45.8%) -- guaranteed 3HKO after Leftovers recovery
-1 252 Atk Choice Band Zangoose Double-Edge vs. 252 HP / 252+ Def Hitmontop: 70-84 (44.5 - 53.5%) -- 1.2% chance to 2HKO after Leftovers recovery
It's good enough, but not as good as a sustainable wall that fits the high ranks should be, or maybe that's just me. Put it in A at the moment, at the very least.
[spoiler] Don't forget that my bby checks/counters this thing hard too, unless Choice Band Thief is concerned, plus I spinblock. [/spoiler]