Not sure about OVERused, but perhaps UNDERused is the technologically-advance-yet-highly-tribal civilization. Basically, think of Black Panther from the Avengers/Marvel Comics.
Overused, I'd say off the top of my head, are the fixed steretypical races. That if they're "beastly" in nature, they're rather barbaric or more tribal and less prone to logic or reason. Why not have them still be barbaric but more advance with a twisted logic? Like "organized crime"?
Another idea is the "middle-man" of humanity. Where they may be technologically advanced, but they're not exactly "as far" as other races. It doesn't always fit with typical narratives we expect as stories are often meant to relate with us - the real humans partaking in the fictional adventure - but let's put humanity in spots they're not usually found in...even if it does seem off.
I'm seeking Narnia. Who wants to come with me! Aslan is on the move!