Julie Christmas is a personal favorite.
The Battle of Mice records are harrowing (content warning for DV). Made Out of Babies was incredible as well. Same for her work with Cult of Luna. Some really, really unique vocals there.
My personal favorite is the Spylacopa Self Titled record. That album was a great blending of styles and guest artists, but Julie’s work stands out.
Dunbar’s Number for anyone interested in reading further on this theory.