> A lot of people feel that the White clique of West Coast jazz capitalized on the popularity of the genre without really contributing much to it.

Meanwhile:

> The nonet recorded 12 tracks for Capitol during three sessions over nearly a year and a half. [Miles] Davis, Lee Konitz, Gerry Mulligan, and Bill Barber were the only musicians who played on all three sessions […]

* https://en.wikipedia.org/wiki/Birth_of_the_Cool#Recording

Mulligan also has multiple writing credits.