Their names are (from left to right) Parzival, Effie, and Simone Kingston. They are each a professor of a different study in a fancy university of some sort... and perhaps also occultists in their free time (when they get it!!). Drawn on stream, I had a lot of fun with this :3
Parzival uses she/they, Effie uses she/her, and Simone uses any pronouns. Altogether you can refer to them with they/them (plural).