Well, Mogan already created the Dwarves first, although they're still asleep until the appointed time. Loosat has his Tarjinal/Godpikes but I classify them as demigods/"monsters", and same with Mogan's Elementals and Salamanders and, I presume, Eldest Dragons (Z'ozal's corruption of the Salamanders). I'd also classify Modaara's Changelings as either lesser gods or demigods, and the First Vampire as a demigod/monster. The problem with introducing mortals right now is that there's no animals for them to interact with yet, unless you want a second creation story where mortals really do rule the world by right because they made the animals. I'd personally prefer mortals coming rather late in the creation cycle, being so fragile and dependent on existing materials to survive, unlike, say, Elementals or Dragons. My suggestion would be to create demigods/"monsters" first, to include spirits and lesser gods, like phoenixes or the First Wolf, First Cat, etc, the sort that can talk intelligently and can create lakes with their footsteps. Also create the Moon, which tends to be extremely important in most myths - Thrulf could do it, or the Wanderer could do it, or Modaara could do it, anyone really. Then have Z'ozal's corruption turn some of the demigods into the first monsters, or Its unspeakable spirit and presence cause monsters to spring forth spontaneously, maybe out of the muck he left behind when he first showed up. Those First Monsters would be the sort that later become the "dug too deep" monsters and "things waiting in the Beyond on the other side of the Outer Gates". Somewhere in there we can have some children of the First Animals either become mute and unintelligent or just refuse to talk in the presence of mortals, for one reason or another. Either at the same time or separately, we can have mortals show up, either as friends and allies of the First Animals like the traditional Elves, or neutral/enemies like the traditional human. Z'ozal's corruption can then turn both animals and humans into Lesser Monsters, like goblins, orcs, ghouls, banshees, etc. How's that?