If their are over 8 million gods, are gods from other cultures like Greece and Egypt in the Noragamiverse?

Y'see I would really like to make tagahanga characters for this series in the event of RP, but I don't think I would want to stay in Hapon for the ideas I have.

Therefor if theirs 8 million plus gods, theirs gotta be the pantheons of other religions, cultures and countries right? It only makes sense to me, what do you guys think about it? I'd really like to know.