The Jetsons should be #1. A jazz masterpiece
Didn’t realize this until now, but I recognized the third movement of Rimsky-Korsakov’s - Christmas Eve: Orchestral Suite (1895) in the Jetsons theme song!
https://www.youtube.com/watch?v=k0vFOax7ZeU
Jonny Quest
Yes, there's an uncredited Jonny Quest documentary on YouTube that goes into great detail about Hanna-Barbera's show themes and the efforts of Hoyt Curtin to give his pro musicians something challenging to perform. BTW, Jonny Quest's theme should absolutely be on the list.
Sorry. I misread your post as the Jeffersons.