Those are the "best" special walls in the tier and are very susceptible to being pursuit trapped. Exeggutor ohkos pretty much everything that isn't a special wall though. Quagsire, swellow, manectric, kingler, crawdaunt, granbull, steelix, vileplume, hitmonlee, tentacruel, lanturn, zangoose, donphan, gligar, jynx, kabutops, and countless other UU pokemon are all pretty much ohko'ed by exeggutor (or 85% damage at least)