As for Hex, I'd say you're underestimating the number of Maoists, anarchists, etc. MLs may be the majority, but there's quite a bit of variety here.
Also I think there's at least a few of us who are more non-denominational leftists for lack of a better term
Personally I don't see labels as being all that useful beyond the fact that someone calling themselves a socialist or a communist proves that they aren't scared of being called one
