In no particular order:
Chuck Berry/Buddy Holly (influenced everyone)
U2
The Replacements
Led Zeppelin
Nirvana/Foo Fighters

Honourable mention:
The Clash
Stiff Litle Fingers
Pixies
X
Iggy Pop
Velvet Underground
Jimi Hendrix
Neil Young
Little Feat
Oasis

And many others who had one great record and the blues and roots musicians who influenced the 'greatest' bands.

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