Simple question. (Don't forget some fighters train at more then one camp.)
Cesar Gracie Jiu Jitsu Academy
-Nick Diaz
-Jake Shields
-Gilbert Melendez
-Nate Diaz
American Kickboxing Academy
-Cain Valesquez
-Jon Fitch
-Josh Koscheck
-Mike Swick
- Daniel Cormier
-Josh Thomson
-Cung Le
-Herchel Walker
Black House/Team Nogueira
-Anderson Silva
-Jose Aldo
-Lyoto Machida
-Junior dos Santos
-Big Nog
-Little Nog
-Rafael Cavalcante
-Diego Nunes
Jackson's Submission Fighting
-George St. Pierre
-Jon Jones
-Melvin Guillard
-Shane Carwin
-Clay Guida
-Carlos Condit
-Brian Stann
-Donald Cerrone
Xtreme Couture
-Randy Couture
-Forrest Griffin
-Stephan Bonnar
-Martin Kampmann
-Gray Maynard
-Sam Stout
-Amir Sodallah
-Phil Baroni
Other
-Wolfslair MMA Academy (Michael Bisping, Quinton Jackson)
-American Top Team (Thiago Alves, Thiago Silva)
-Alliance MMA (Dominick Cruz, Phil Davis)
-Team Rough House (Dan Hardy, Paul Daley)
-Duke Roufus Academy (Alan Belcher, Pat Barry)
-Team Alpha Male (Urijah Faber/Chad Mendes)
-The Pit (Chuck Liddell, Court McGee)
-Etc, etc..