In the Forth World/Earthdawn three additional races were present, Windlings, Obsidimen and T'skrang.
I know that Windlings have been widely regarded as Pixies but have the other two races appeared in canon in Shadowrun at all?
Evo share holder Hideo Yoshida may be an obsidiman.
No t'skrangs have been reported in the Sixth World (Shadowrun).
I've found this wikia site rather reliable so far - but, of course, I might be wrong, and other answers may provide more up to date and more precise information.