I like the Wallflowers. The greatest thing that Bob Dylan did for music was let Jimi record "All Along the Watch Tower"
Agree with you on the folk singer thing. I can think of a few that had good voices. One used to be your avatar.
RIP Jim.
A few folks singers who couldn't sing well IMHO:John Denver- wasn't all that bad but not good either. Very whiney. Goodlyrics for the mountains.
Judy Collins - makes my spine tingle she is so bad.
Joan Baez - see Judy Collins but not quite as bad.
Peter, Paul and Mary - just a personal preference, I don't like em.
Jewel - terrible voice but i like a lot of her music
Norah Jones - same as Jewel
Arlo Guthrie- good songs, avg voice. City of NO is still a classic.