Jedi Knight - Human
Jedi Consular - Miralukan
Trooper - Cyborg or Human
Smuggler - Mirialan

Sith Warrior - Sith Pureblood
Sith Inq - Zabrak (Darth Maul, Double Bladed, ...)
Bounty Hunter - Cyborg
Imperial Agent - Chiss or Rattataki