I know of about half the bands on your list.
Gentle giant definitely deserved more recognition.
I haven't heard The Tubes mentioned. Formed in 1975 out of San Francisco, they definitely had a different approach. A little rock, a little punk, a little??? And a lot of humor.
I saw these guys live twice and boy did they know how to put on a show( not just play)
They had a couple of minor hits" Talk to Ya Later"and "She's a Beauty". But most people wouldn't have a clue who The Tubes are.