Not a bad list and I do agree with most of your choices. I would also add Martina McBride, but I will admit that the messages in her songs may have influenced my opinion of her voice.
I am sure I will get slammed, but Barbra Streisand also has a great voice. Can’t stand her politics though.
Fun and interesting thread. Thanks for starting it.
It's really hard to bring her up here on FR but Barbra Streisand's vocal capabilities are just about the best I've ever heard, even including opera (except for extreme high range.)
Her "instrument" is fantastic; among the best ever. Too bad her brain isn't.