(I shall try to sum it up, I will probably forget something though:
Creatures:
Gemchildren - creations of Zyenild, beings of magic, lives in caves underground.
Demons - Slaves of Yaven'Gan, dwells within his plane, Nessus.
Keepers of Lotan - Slaves of Yaven'Gan, tasked with maintaining Lotan, the largest sun.
Dragons - Weaker descendants of the Keepers, slaves of Yaven'Gan.
Humans - Creations of The Old One, lives on the surface.
Narrians - Servants of Wayock, the god of war. I am unsure if they are theri own race or not.
Various animals have been created by the different gods.
Apep - The (currently) deceased avatar of Yaven'Gan.
Erif - The exarch of the Narrians.
Fan-Hondak - Exarch of the Gemchildren.
Avatar of Zyenild - The avatar of Zyenild (duh
)
Stonekin - Servants of Tevorak.
Stoneworms - Rockworms who eat stuff, created by Tevorak.
The four horsemen of corruption - Avatars of Insurgo, created to corrupt the other races.
Stellar objects:
Lotan - The largest sun, created by Yaven'Gan.
Nal - The smaller sun, created by the god of fire.
Stars - Created by Zyenild, they are responsible for upholding the flow of magic.
Planes: Many gods have their own planes, the most important are:
The Underworld - where the dead go.
Nel'ulos ethereal plane - a transportation route for those who die on Primordia, goes to the underworld.
Various artifacts.
That's all I can think of right now.)