In no particular order, I would say
Ted DiBiase Sr.
Is this just WWE? or from anywhere? It seems like a complete WWE list, with the NWO & Ric Flair posted up.
I don't think I could make a top ten, because there are many, many heels out there but there are a few that not many come close to. Mine would include;
in the top 3, with a sporadic ever changing series of choices within the other 7.