Conor style of jujitsu isn't Gracie based,aren't the shoot fighter schools all none Gracie?
Other than none Gracie ,I don't know of any none BJJ styles jujitsu I think it's always alternate ground games,wrestling,sambo etc
Anyone that trained under Dave Camarillo is taught Guerrilla Jiu Jitsu (Cain, Fitch, Koscheck, and Swick).
Josh Barnett is a catch wrestler.