Pianist Lowell Davidson, who had a single record on ESP with Graves and Peacock, was an integral part of the Boston scene up through the 80s. Apparently he exacted a pretty strong influence on a number of people working there, including guitarist Joe Morris.
In the 70s: saxophonists Michael Cosmic and Phill Musra, and drummer Huseyin Ertunc (of Turkish heritage) had a powerful post-AACM trio that recorded under each of their names, as well as in the World's Experience Orchestra. Trumpeter Mark Harvey is a regular fixture in the Boston scene, and had some pretty engaging small groups in the '70s and '80s, including a rare trio on Bush Records.
David Ware and Cooper-Moore studied at Berklee, and their Apogee group began in Boston, with Marc Edwards on drums and occasionally Chris Amberger on bass (great former Oakland-area bassist who played with Smiley Winters). Of course, the history of that group is well-documented.
Edit for a few more names: Raphe Malik, Dennis Warren, Billy Elgart, John Voigt, Laurence Cook... will try to think of a few more.