https://www.classical-music.com/features/artists/rock-singers

We have our own opinions.

My least favorite:
Van Morrison
Robert Plant
Bjork
Kevin Rowland
Frank Zappa
Yoko Ono

The ones I like the most:
Peter Gabriel (Genesis era)
David Byrne
Michael Stipe
Neil Young
Lou Reed
Iggy Pop
Geddy Lee
Glenn Danzig
Nick Cave

I’m indifferent:
Grace Slick (Jefferson Airplane)
Patti Smith
Kate Bush
Bob Dylan

Never heard of them:
Edwyn Collins
Stuart Staples
Brett Anderson
Antony/ANOHNI
Captain Beefheart
Mark E. Smith
Robert Wyatt
Tom Waits