Since Horde races are all garbage, this list is better in every way 
:
Death Knight: Human
Demon Hunter: Night Elf
Mage: Gnome
Hunter: Dwarf
Shaman: Dark Iron Dwarf
Priest: Draenei
Paladin: Lightforged Draenei
Rogue: Kul Tiran
Monk: Pandaren
Warlock: Void Elf
Druid: Worgen
Warrior: Mechagnome