Notes:

In a different angle shot of the same scene you can see Entrapta next to Glimmer; they probably took her out of the wide shot because Adora's supposed to think that Entrapta's dead at this point.

I think it's safe to speculate that some of these princesses are She-ra characters not yet accounted for: Peekablue, Sweet Bee, Double Trouble, etc.

The princess with the cat tail is not necessarily Catra, in Classic She-ra there was the Kingdom of the Magicats. They did wind up making Catra their queen, but that was by usurpation.