Yeah, I mostly remember the one you have to fight while high on some hallucinogen in Honest Hearts. I think it might be that the yao guai don't really have much of an identity, they're just weird looking bears. Or maybe the deathclaws just win by seniority, my strongest memories of them are pretty much all from Fallout 1 and 2 (and maybe Tactics, which I have kind of a soft spot for despite being uneven at best).