This may be boring, but I sort of am a big fan of the studio NOIR and to a much less extent DarkroomVR, specifically for their backgrounds/lighting.
Having a dark/black/low light background really creates a sense of seclusion with that person, intimacy, and it feels like ive been transported into a space with them. Imo static black > PT... also cuz my room is dirty lol.
Some of the CGI backgrounds are like super bright and make me feel like I'm using a Virtual Reality helmet (which...I am right).
The darker backgrounds from Noir (much lesser extent DarkroomVR) make me feel like I'm "under a spell".
So... can't wait for static backgrounds!!!