Tennessee Ernie Ford
Jim Morrison
Ian Anderson
Jim Morrison is an interesting choice. I like his style, but not sure if he is the best singer. But - the question was “vocalist” so I think he fits. Innovative, passionate, etc.
“You gotta beep a gunk a chucha
Honk konk konk
You gotta each you puna
Each ya bop a luba
Each yall bump a kechonk
Ease sum konk
Ya, ride”
My other favorites are:
Geddy Lee (Rush)
Jon Anderson (YES)
Jon was singing at their Rock and Roll Hall of Fame induction last month - at 70 years old he still sounds great.