I recently picked up an old campaign setting I was working on, and I needed to account for the locations of various outsiders and how certain magic, so if I missed anything or people had questions about how the cosmology works I would appreciate the feedback.
Asura, Divs, and Elementals have the native subtype and exist on the material plane.
Angels, Aeons and Agathion are native to Memoria.
Azata and Proteans are native to Discordia.
Archons, Axiomites, and Inevitables are native to Eternia.
Daemons, Demons and Devils are native to Hel.
Psychopomps are native to Muerta.
The Ethereal Plane doesn't exist, spells that put you on the Ethereal Plane or creatures that exist on the Ethereal Plane simply exist on the material plane in an alternate state.
The Plane of Shadows doesn't exist, spells that put you on the Plane of Shadows or travel through it do not work. Spells that use 'shadow stuff' to make semi-material illusions draw from the composition of the material plane.
Solid so far, looking forward to more.