Yesterday I watched this movie for the first time, and although I already knew there was a scene with Amitabha Buddha, I didn’t expect so many reference spread all over. Anyway, it is a really nice movie, with many important topics, I highly suggest it!
This movie is like the king of freeze frame references. If it's mentioned anywhere in Japanese mythology, even if in a form borrowed from other cultures, it's virtually guaranteed that it appears somewhere, especially in the yōkai parade the raccoons put on. I think the Ghibli animators had a lot of fun cramming in absolutely everything they could think of.