MarkB
Legend
Really? Someone points to a cat and asks you what it's parentage is, you're going to assume they're asking you to differentiate between it and a dog or a bird, rather than between it and other cats?Parentage, ancestry, lineage, folk, kindred, descent… take your pick, honestly.
As you point out, there's no true equivalent of the varieties of playable critter in D&D, but those terms are used regularly in the real world to mean things a lot narrower than the difference between humans and elves.