Nice list! This is more or less my vocal range as well. (Stevie is a major influence for me as well!)

A few additions, if I may...

Kathy Mattea (have you heard her reinvention album, Pretty Bird? It's stunning and I think you'd love it. $9 on Bandcamp and more than worth it)

Marianne Faithfull

Mary Chapin Carpenter

Linda Ronstadt

Jessi Colter (who originally made me want to be a singer/songwriter when I was a little girl)

John Denver (you know I had to add him and yep, he's a male and a tenor but his range probably fits yours as it does mine, like a velvet glove)