Freddie Hubbard was far from an "outlier" in trumpet circles. Maynard, Mangione, Alpert, hell even Bill Chase before his untimely death, just happened to catch on as rock stars not just to trumpet players but to the general public . Back then their music was substance and not some pop hook tune. But guys like Hubbard, Vizzutti, Doc (even though everybody knew about him because of the Tonight show), and a ton of others were monstrous talents. Even to this day I still play alongside two of Maynard's former lead players and another guy who played lead for Buddy Rich, on a regular basis and I am in awe sitting on the second third or fourth book next to these guys.
Nowadays you have so many supremely talented trumpet players like Rick Baptist, Malcolm McNabb, Chris Coletti, etc.... not to mention the principals of most of the world class orchestras that are just pure perfection. (We even have at least one UT grad amongst the ranks of those upper tier elite orchestral types).