I know Bill Evans has tons of fans, but outside of his work with Miles, I find him a snooze. I don't hear the blues/bop roots in his playing. For much the same reasons, I have little interest in Brubeck. Both are accomplished, both could compose -- they just aren't playing my flavor.
Some prime players who deserve to be better known: Duke Pearson, Elmo Hope (major, major talent), Sonny Clark (check out his Leapin' and Lopin' on Blue Note) and Phineas Newborn (do whatever it takes to get his Great Jazz Piano of Phineas Newborn, Jr. on OJC.)