I think the sx is filtered through sp in lyrics like
this. Theres a lot of sexuality in it but it's largely couched in language having to do with tangible things like her hands, light through a window, a messy room, etc. It's subtle and physical. I also get the sense in a lot of her lyrics that they're going after the effect that her relationships have had on her alone, like she's ultimately this self contained entity in an almost selfish way ("I don't need the world to see/That I've been the best I can be, but/I don't think I could stand to be/Where you don't see me"). And the sound is sort of dissonant, uncomfortable, spooky, contraflow. I know you've put a lot of study into enneagram and probably won't agree but that's okay.