unknought replied to your post “facts: cherub territories tend to span ‘many lightyears’ by the time…”
do we even have reason to believe cherubs existed in that universe? that would require the same species to arise independently in multiple universes, which I don’t think we’ve seen any instances of
Even if we are to assume that evolution in Homestuck follows the same sort of random pattern it does in real life - which in itself is dubious - we’re given plenty of reason to believe cherubs are a special case.
Aranea describes cherubs as if they are more of a feature of a universe than a fully independent race of their own;
Notice the use of indefinite article - organisms living within “a” universe, as opposed to organisms living within “the” universe.
This is supported by her later claim that Caliborn is of a race that was “never meant to play“ SBURB - cherubs at the very least are not of the same game-playing stock as humans and trolls.
Other details specifically suggest that cherubs have enough of a presence in Universe A to have cultural significance to trolls. From A6I3:
Huge prehistoric green serpents have always played a major role in your people’s mythology, both before and after your session scratched.
The cherub portal/s from Hiveswap is also particularly damning. Until we get more in-game explanation it could easily be suggested that they exist only thanks to our resident cherub Lord English, but the point they make remains regardless; just because a species arises in one universe doesn’t mean they can’t also be found in another universe due to other means. Don’t forget Calliope and Caliborn’s father once encountered a planet inhabited by trolls, who originally came to be on another world entirely.