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 粉丝 characters for this series in the event of RP, but I don't think I would want to stay in 日本 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 你 guys think about it? I'd really like to know.