Orcs: Bonechewer clan/Bleeding Hollow clan (Fel orcs), Dragonmaw clan, Blackrock clan, Mag'har
Trolls: Revantusk tribe (Forest trolls), Frostmane/Winterax tribe/Drakkari (Ice trolls), Sandfury tribe (Pretty much like Sul from ToT)
Tauren: Yaungol (We killed them, but we helped some of them too) and the Taunka.
Dwarves:Dark Iron dwarves, The Frostborn ,The Earthen ,Iron Dwarves.
Gnomes: Mechagnomes (related to Ulduar/The Storm Peaks)
Goblins: Gilgoblin and Zombie goblins (Death is money, friend!)
Night elves: Druids of the flame (Ragnaros is gone and Staghelm too)
Blood elves: Felblood elves
Extreme case: Saurok skin for Worgens and Night elves as Jinyu.