A big question might be who is healthy enough to join the team? That would affect Taurasi, Ogwumike, and EDD. And Ionescu if she's up for consideration.
If looking at post players, Fowles/Griner/Charles/Wilson are all having terrific seasons, and I would think are shoe-ins for the team. As is Stewart.
Bird and Gray are the two best PGs in the league right now. Loyd and Diggins-Smith have looked terrific.
I think Collier should make it; Atkins IMO has earned it based on her WNBA season thus far (and she's also a terrific defender). But I'd be surprised if she made the cut--she has an outside chance if Taurasi, Nnkeka, EDD all can't go.