Here is a list of the various suffixes I’ve found (probably done better elsewhere). The ones with the names in italics are from Outland. These are the “of the” type suffix.
Ancestor: Green, Strength, Melee Critical, Stamina
Bandit: Green, Agility, Stamina, Attack Power
Bear: Green, Stamina, Strength
Beast: Green, Strength, Agility, Stamina, Feral Attack Power
Boar: Green, Spirit, Strength
Champion: Green, [...]