Well, I feel silly! This whole time I thought it was weird that I wasn't seeing more philosophers discussing which things can or can't be appropriately called 'God.' Turns out it's a huge, ongoing debate in the philosophy of religion place.asburyseminary.edu/faithandphil...
place.asburyseminary.edu
The Reference of "God" Revisited
By Hugh Burling, Published on 07/01/19