(I'm no Foxhack, but the scream is fully deserved!)
Wondy vs. Ivy. It's an interesting thought. They crossed paths a couple of times back in Pre-Crisis days, but now Ivy can theoretically keep up with Diana.
... well, no. Diana still outclasses Ivy in most ways. Except in choice of lover.
Perez actually did hint at that, ever so glancingly, but the relationship between his Cheetah and his Dr Minerva was much more complex than that.
IIRC, Perez only did that in the very first appearances. IMO, he initially intended to go that route but changed his mind when he realized what he had in the good Doctor... and Chuma. I miss Chuma :(
While I think of it: Cheshire is no match for Diana, but (assuming some form of parity) I would love to see Diana fight Shiva. Diana's physical power has the side-effect of her seldom getting the credit she deserves for her skill. It's easy to talk about non-powered martial artists*, but it's harder to accurately gauge metas.
*-- well, non-powereds and people whose powers aren't physical. Dinah leaps to mind.