just to add ...
If your understanding of spirituality works fine for you that's wonderful! I appreciate that.
I'm just concerned about getting historical facts correct.
That's fine. So far they are correct. You add a minor ie: shinto. I could add much more from shingon to tibetan and you can't get much deeper than Buddha. Then we have Japanese shinto.
The so called esoteric sides of religions are the spiritual sides, not analytical or intellectual, so I fail to see your point.
Can't get much more spiritual than omoto. I wonder what the esoteric side of daoism is?