If they evolved from us and still held information from the past im pretty sure they would still be humans cause what did we call other members of the homo genus... Humans. Yeah ik they wont be homo sapiens but they most likely will still fall under the homo genus so they will still be human. Also ik what you where trying to say, and that is true it doesn't really help with the some what irrational nature of existential dread. And i know for a fact i will be most likely no one ancestor