Yeah, Shawn, Donald Byrd covered a lot of ground over the years too. Maybe not as "cutting edge" as Wayne's journey, but some pretty interesting routes nevertheless, especially in the very late 60/early 70s (KOFI still blows my mind, both in terms of how interesting it is texturally and how it could have stayed in the vaul for so long).
Of course, BLACK BYRD was a whole nother direction entirely, but let's not go there, shall we?
And here's a nominee that reflects both Wayne's and Byrd's legacy for the label - Duke Pearson. From artist to staff arranger to A&R man to outright producer, I think he played a big role in the overall output of the label from the mid-19630s onward, and, as producer, was responsible for the most interesting things after UA took over from Liberty and things started getting REALLY wierd. His own recordings covered a lot of ground over the years, too, and although none of it jumps out and screams "HEAVY SHIT!!!", there's quite often some very inteeresting and personal touches going on, especially once he embraced Braziliana and the electric piano.