If you want a weird underrated one I would recommend Legend of Legaia from the PS1 era. It's a neat one with a kinda cheesy story but what sets it apart is the combo system; to do attacks you set a series of inputs like high punch, low kick, high kick etc on your turn and that gets executed. Some enemies are weaker to certain things, some characters are stronger in certain things. The fun comes from finding each characters unique combos though...maybe doing high high low low triggers one of their special moves for instance. And then once you discover those, you discover that if 2 characters do their special moves on the same turn you get a combo special move. It's both really shallow and yet has enough illusion of depth as to feel really satisfying.

It's one of those weird underrated games I never hear anyone talk about but that has a special place in my heart. I won't pretend like it's an amazing game, it is definitely from it's time, but it did some cool things and is worth checking out