Pretty astonished to see anyone list Zappa, considering most people I have seen in other places posting on these kinds of questions either don't even know who he is or they just say they hate him. Have also seen a lot of Tool hate elsewhere which always baffles me, so I guess I am in the right place. 😊

Aside from the above, I guess there would be a lot more to list but some other of my most favourites include:

David Bowie, Small Faces, The Stooges, Lou Reed, The Doors, Roxy Music, T-Rex, The Kinks, The Clash, Stiff Little Fingers, The Fall, The Jam, Buzzcocks, Blondie, Heart, Joy Division, The Cure, The Specials, Madness, Siouxsie and the Banshees, Curtis Mayfield, Eric Burdon and War, Humble Pie, Faces, The Rolling Stones, Pearl Jam, Paul Weller, Tom Petty, SoS Band, Soundgarden, Rage Against The Machine, Nine Inch Nails, Pixies, No Doubt, Moby, The Crystal Method, Sounds From the Ground, Thievery Corporation, Faithless.

edit: I suppose technically, these are not all "rock" bands. Apologies for the cross genres.