I think it's Brazilian Top Team.
Antonio Rodrigo Nogueira
Antonio Rogerio Nogueira
Luiz "Buscape" Firmino
That's a pretty tough squad to beat right there. No champions as of right now, but a couple of ex champs and some potential future champs in Filho, Arona, and Lil Nog.
Miletich is a close 2nd IMO, then followed by Chute Box