Mercurius
Legend
True, although then we get into the whole issue of cross-breeding. I'm not a biologist, but evidently lions and tigers are closer (sub-species of cat) than human and gorilla.*species is honestly the better term here, but maybe sounds too scientific for fantasy.
Anyhow, race, folk, people, kindred, etc, all have a more fantasy sound to them. "Heritage" is just woefully inaccurate.