yes but none of that actually states outright which group was the genetic forebear of the other. karkat created them all, sure, but it doesnt say which group he created first. doc scratch says whats a given: that a group will be regarded as another groups ancestors, it doesnt actually say who is the genetic forebear of another, just who chronologically came first. if we were basing it off how the kids worked, than the alpha trolls would be the forebears, but its never stated outright.

The fact that Karkat didn’t know who the extra 12 were proves that Karkat’s group is the parent generation. Because if they were the parent generation Karkat would have seen them on the screen when he had to clone them and get their ecto-goo for mixing. And actually if we based it off how the kids’ worked then the Alpha trolls would be the children generation since the human’s child generation played the game first.