If you look at it, all civilizations have become corrupt.. ALL!! Thanks to the f*king Joos and their bastard child religions. However, probably some of the civilizations that are still close to Satanism today are Hinduism, Yezidis and Mayan. I haven't studied much about Japanese and Chinese. But Japanese seems to be close to Satanism as well. But mind you, all of them will have corrupt knowledge. So, you have to use discretion when you study them.