Top Ten Rock Vocalists

Paul Rogers - embarrassingly poor lyricist but one hell of a singer. 
Nancy and Ann Wilson
Robert Palmer
Mick Jagger
Roger Daltrey
Joni
Janis
Tom Waits
Steve Marriot

Roy Orbison

I’ve seen many I like in these lists, but I would add Terry Reid, aka Superlungs. On the harder side, Phil Anselmo from Pantera and the singer from System of a Down, Serj Tankian. Sorry if I repeated any but I didn’t think I saw any of these 3.

Add;
Sass Jordan
Rod Stewart

I'll go with

Robert Plant
Mick Jagger
Iggy Pop
Joey Ramone
Morrissey
Steven Tyler
Johnny Rotten
Jimi Hendrix
Axl Rose
Rod Stewart