I like some of those artist also so I can base my answer on similarly quirky artists and I totally understand the range of tastes.
Did you know that Angus Stone has a new solo album out? It’s called Broken Brights.
Here’s a really cool video from it.
If you like Brandi Carlile you might like Catherine Feeny. She has that sort of raspy deep voice and she’s sort of lyrical in a dark way. She’s very spirited and not afraid to be odd. Check out People in the Hole
These lean a bit more to folk rock and country to a greater or lesser degree.
The Waifs Lighthouse (this song never fails to make me feel happy!)
Especially the album Up All Night
Favorite song of mine-Flesh and Blood
Turnpike Troubadours
Diamonds and Gasoline
The Volebeats
2 Seconds of Your Love is my favorite of theirs
Vietiver
Tight knit-fav songs Rolling Sea, Sister
Blind Pilot Oviedo
3 Rounds and a Sound
Sonya Kitchell Train
Words Come Back to Me
Olafur Arnolds Ljosio
…and they have escaped the weight of darkness
“Minnie Driver”:
Seastories
Everything that I’ve Got in My Pocket Deeper Water
Iron and Wine Monkeys Uptown
Emily Wells Symphony 1 in the Barrel of a Gun (pretty eccentric. I would hesitate to recommend this but if you can take Julia Stone’s singing you might be able to appreciate Emily’s!)
I have lots more suggestions. Hope you like some of these. You’ll see that I love pretty guitar picking and violin and cello.