I like the antagonizer, those are my favorite. They've got some real zingers, 2nd grade style.
Fess up. You ARE the antagonizer. (Just kidding.)
I like that article in the OP, although I can't figure out where I fit in on that list. I suspect all of us are a cross between more than one example listed. I would like an additional category: the Drama Queen. God, I can think of several people who fit that description whenever politics are discussed.