Rickea Jackson, to me, is the most skilled of those three. She has a lot of different moves offensively, and she can really shoot the ball too. She has a slender frame that would certainly benefit from the addition of some muscle. Big time scorer.
I think Amihere is the most athletic of the three, and probably the one whose game is best suited at the PF slot (where I think the other two may skew SF, but depends on the system). Super explosive, dunking-ability, and it looked like she was developing her outside game too. She has endured two (?) pretty major knee injuries, so I haven't seen her play in a while. Definitely a rare talent and blend of size, combination, and athleticism.
Reese has a very unorthodox, unique style of play. She is really long, and really wiry, but she has a unique skillset, but she is still very efficient as a passer, rebounder, and scorer. She can really push the ball in transition as more of a point-forward role. Her outside shot is definitely a big question mark, though.