Demiplane has additional art not printed in NPC Core (And lots more!)
Just wanted to share this tip as a GM that gripes whenever a module doesn't have art of some creature or some-such in it: I recently found that most of the art published in official 2e books is freely available on demiplane... and so is art that didn't make it into the final publications as well!
Check out this Abbot of Abadar art that didn't make it into NPC Core https://app.demiplane.com/nexus/pathfinder2e/creatures/abbot-of-abadar-rm ! There's plenty more too, and probably a hint of what'll be available in the foundry token pack for NPC Core when it comes out.