Don't forget other great jazz labels, such as Riverside, Verve, Contemporary, Mercury/EmArcy, Columbia, Impulse!, Atlantic, and Pacific Jazz. And that's just from the LP era.
Going back to the 78 era there's Savoy, Commodore, RCA Victor, Columbia/Okeh, Majestic, Melotone, Cameo, Joe Davis, Dial, Keynote, Perfect, Vocalion, Varsity, and Decca (not so much jazz focused during the LP era, but Decca was huge jazz label of the 30s and 40s).
--Jerome