Various, Queen, Free, Thin Lizzy, Status Quo, Bad Company, Mott The Hoople, Faces, Cream, Deep Purple, Whitesnake, Emerson, Lake & Palmer, Atomic Rooster, Rainbow, Black Sabbath, Robert Plant, Queen, Boston, Toto, Santana, Survivor, Blue Öyster Cult, Foreigner, Fleetwood Mac, Meat Loaf, Bachman-Turner Overdrive, Argent, Joe Walsh, Python Lee Jackson, Rod Stewart, Golden Earring, Alice Cooper

Seattle Grunge

Heavy riffs played by people raised on punk, recorded cheap in the Pacific Northwest and then sold worldwide.

Detroit Proto-Punk

Pull this thread and you get Michigan guitar noise from 1969 ballrooms to 1999 basements, unbroken.