Could you please answer this question I have about this saga?

I'm referring to the Chinese film trilogy Bunshinsaba vs. Sadako. I know these are just non-canonical films, but my question is, in terms of power scaling, what level are all the beings we see: Bunshinsaba, Sadako Yamamura, and Jarona, and what is their cosmology like, and does it have any external material that forms part of this universe?