The sundered Ancients are referred to as "malformed creatures" by the unsundered with Varis commenting back in SB that the sundering is the reason the different races exist.
https://i.imgur.com/4abHqBS.jpg
I'm not certain that the Ancients would've been sundered into exact replicas, but there isn't much in game to go on and the Ryne scene could be easily dismissed as a simple demonstration to get the point across. If they were identical, then that's some advanced evolution at play shrinking them down to a fraction of the size with some developing bestial attributes.