An author who explores some of these topics is Jasun Horsley (https://auticulture.com/). His website, books and podcasts are careful, thoughtful explorations of difficult and sometimes hidden topics. His candour about his own experiences is extraordinary.
A place to start might be with this article:
What You Should Know about Organized (“Satanic”) Ritual Abuse
https://auticulture.com/blog/2018/10...-ritual-abuse/
But there is much more on his website. I recommend his podcasts for their very real, personal engagement.