Nature of rebirth

I want to understand the nature of rebirth. If one says that the next rebirth would depend on the degree of identification, does that mean that if I am not identified with body I will be reborn without a body or as mind only? Or does it just go to a higher being overall that keeps that degree of overall identification and not restart from scratch? Or the rebirth just restarts all the identifications and the path has to start all over again? What also caught my attention is if there is complete dis-identification even with the inherit "I" self existing independently, and that now existence itself realized that it is not this limited "I" because it can't be that "I" realized but what is before that which is nothing and everything and no birth will occur, doesn't that mean "I" will never exist again and just dissolve into existence? Or rebirth can happen as a completely dis-identified being by default?