This is a living document and will continue to change as I play the game. It's important to note that the game changes base and max stats as soon as a rarer costume is obtained, thus making the preservation of "base maximum stat" data difficult to obtain.
I'm hoping, at the very least, this document provides useful to some. The game is average, but I'm enjoying myself playing it. That's what matters, right?
If you have screenshots or images of when you get new characters for the first time, I'd love to see them. They always show the potential maximum stats of that character with that costume.