Could a scratched (or unscratched) version of someone use their Quest Crypt to ascend? Like if Nannasprite spritesploded on Jane's crypt, or if Condy somehow had access to Meenah's crypt from the A1 session. They're technically the same person, and never having had a dreamself doesn't matter on the crypt.

I don’t quite think so? They may be the same people biologically, but they’re not the same people just like, as characters, neither are they from the same Timeline, so chances are slim.