Yes
Jethro Tull
Deep Purple
Black Sabbath
Rush
Interesting list. It maybe because these bands were progressive rock bands. Baby boomers tired of prog rock in the mid seventies and turned to earsier/softer rock as performed by simple bands like The Eagles.
I think the prog rock bands like Yes and Jethro Tull will always be remembered. In the case of Yes, they morphed into a very successful pop rock band in the 80's releasing a string of hit songs like 'Owner of your lonely Heart'. Of course i will always remember Yes for their progressive albums, Fragile and Close to the Edge..etc..
On the other hand, Jethro Tull started out as a terrific blues/hard rock band before temporarily releasing prog rock albums like Thick as a Brick and Passion Play. Most people probably are not aware that Tull released a string of hit singles in the late 60's and early 70's. If memory serves me correctly, some of the singles were songs like 'Teacher', 'Living in the Past', 'Witches Promise', 'Sweet Dream', 'Inside', 'Rainbow Blues', 'Bungle in the Jungle'.