Here's more, mostly from Europe or the Middle East
Folk:
Allison Krauss
"I'll fly away"
https://www.youtube.com/watch?v=1BPoMIQHwpo
World:
Sheila Chandra
"Nana / The Dreaming"
https://www.youtube.com/watch?v=xbOkmu0w-YU
Natacha Atlas (& Transglobal Underground
"Sky Giant"
https://www.youtube.com/watch?v=sfgdjfgtJw4
Electro-Swing:
Caro Emerald
"Tangled Up" (Official Video)
https://www.youtube.com/watch?v=Yjl890_qwf4
"Liquid Lunch" (Official video)
https://www.youtube.com/watch?v=EUV2GPas4aY
Loredana Grimaudo - singer for "SwinGrowers"
"That's Right!" (Official Music Video)
https://www.youtube.com/watch?v=9Jy8pK7tTzg
Also, if you're feeling adventurous, this channel on Soma FM (online radio station):
Lush - Sensuous and mellow female vocals, many with an electronic influence.
https://somafm.com/lush/