>>93861863Humans/Forsaken/Worgen, Vrykul, Dwarves, Gnomes, Tol'vir, Mogu, and Giants are all fleshy corruptions of Titan creations.
Goblins were uplifted by the Keeper Mimiron.
Trolls evolved from around the Well of Eternity (basically a gaping wound in Azeroth's side where Y'shaarj was torn out by Aman'thul), with Elves coming from further exposure to the Well's energies.
Orcs, Ogres, Ogron, Gronn, and the behemoths are all descendants of the massive giant Grond, created by Aggramar to fight the Sporemounds, that were turned fleshy by the spores of the plant monster.
The beast races were created by their corresponding Ancients, which themselves were created by a combination of Azeroth's magic and the creation of the Emerald Nightmare by Eonar and later Freya. This includes but is not limited to Furbolg, Yaungol (and thus Tauren and Taunka), Gnolls, Murlocs/Gorlocs and thus Jinyu, Quillboar, Pandaren, Centaur, Tortollans, Harpies, and likely Tuskarr, Hozen, and every other beastial race native to Azeroth.