Humans, from Earth. Suited to open terrain. Averagely suited to everything else.
Elves, from [planet]. Suited to woodland terrain. Not suited to deserts. Averagely suited to everything else.
Dwarves, from [planet]. Suited to mountainous terrain. Not suited to the wetlands/seaside. Averagely suited to everything else.
Ingmarians, from Aiyon. Suited to desert terrain. Not suited to cold weather. Averagely suited to everything else.
Luscervans, from [Luscerva?]. Suited to wetlands/seaside terrain. Not suited to hot weather. Averagely suited to everything else.
At least I think that's about right. But yeah, these are the races that were taken from the five worlds, there are no other races in this world. Feel free to help me out with where the Elves/Dwarves were taken from. And yes, Nait, that's what they are and that's what they're called.