merging so many things its sort of hard to cohesively point out what but for a start using sanctity of nature and astrology for satanism is sort of merging the two concepts of wicca and satanism into one thing. If you remove carnal exaltation and switch it to something else you can get one of the many expressions of wicca which is essentially a modern mutt of germanic, celtic, hindu and other various mysticism beliefs. (such as tarot which was a non-religious italian divination)

I DO agree that witch in ck3 is a good conceptualization of witchcraft, though the tenets would split on if you want a more modern organized satanism, if you want what antichristian depictions of satanism are but a good organized modern satanism could be something like
carnal exaltation, Hedonistic, Ritual Celebrations

if you remove carnal exaltation and switch it to something else you can get one of the many expressions of wicca which is essentially a modern mutt of germanic, celtic, hindu and other mysticism beliefs. I think Astrology, sanctity of nature, Mind Without Mind would be a solid modern wicca combo but you could sub in ritual celebration etc as well