This is why I don’t use the terms demon or angel, and when I hear them, I hear someone talking about exactly the same kind of entity, with what’s basically a political alignment.
I’m with Silent in that I use “daemon” just meaning “entity”, without qualifying alignment to any religion or polarity. Even so, some are automatically perceived as having some alignment just via the name used.
I do think a lot of the big names have been around far longer than the religions we know of today. By hundreds of thousands of years if not longer than the age of the Earth, maybe even this multiverse.
As such, I don’t see why one or more of those religions or philosophies couldn’t have gotten in contact with the same being at different times, whether it was a new contact, or an evolution on an old relationship with the people.
So, same entity, multiple contacts… However, each religion will describe and approach that entity through the lens of that religion’s model of the world. So if you use that religion’s version of the daemon via the name they chose/were given, their description is going to affect how you interact with them.
Same underlying entities, many different faces. You can leverage that as a strength or see it as a complication to depending on what you’re doing I guess.
I think as far as the spirits of the Earth go, which are not the same as far as I can tell as daemons that are not Earthbound, there are many different models that don’t directly translate, but you can see some commonalities. Kind of like how Chinese energy points and kundallini chakras aren’t the same but you can draw some parallels in working with both sort of thing.
But to an extent there aren’t any hard lines and the whole question of ‘of the Earth’ and ‘Earthboundness’ is one I’m still thinking about. I have a feeling being an Earthbound spirit is a form of incarnation, only without the actual carnal body part… that only just pooped into my head as I was writing, and there’s more to the inspiration but I’ll create another topic maybe.
The Djinn seem more similar to the Egyptian view of ‘demons’ (not xtian demons), and maybe the Oni in Japan? … and some fae maybe, I’m not sure, that’s an interesting question. Depends what smokeless fire means, I haven’t figured out what that is yet, I’m mulling on it being yang qi but I have get to go ask one to find out.
I seem to recall some Egyptian demons were spirits of place, and some fae are spirits of place, but after that I couldn’t say - leaves a whole lot of questions about all the other types of fae that we don’t have matching information about in academics.