Also try The Women's Encyclopedia of Myth and Magic (multiple authoresses). Also dead-tree, several hundred pp.
Also, metasearch on "Eleusinian Mysteries","Cybele", "Cottyto", "Maenads", "Bacchantes", "Aegis", "Great Goddess", "Midsummer's Night", "Tanist". That should start you off on the grisly realities behind the old pre-Greek "Old European" religion. Come to think of it, try googling that, too -- and "Long House Culture", see what comes up with that and see if it has a religion module.
Hotay? Let me know if your search satisfies you. Keep in mind that, beginning with the "Women's Encyclopedia", a lot of ideologically-driven damage has been done to the knowledge base in the form of revisionist overwriting on e.g. Wikipedia -- the feminazis will have been all over that and pretty much tried to plow Graves et al. six feet under.
You might also try searching under "Marija Gimbutas" .... she's a Lithuanian scholar whose dating schema has been shown to be way too high and whom her critics accused of having lost her objectivity by delving too far into the Old European (gynecocentric) religion and speculating and generally partying intellectually.
Ok, I’ve got Graves Greek Myths on my bookshelf. Looks like there’s a lot of violent imagery involving Maenids which actually is about hallucinogenic mushroom ingestion.
There was an annual fertility rite where one man was chosen by the most desirable woman in childbearing years in the tribe to be king for a year during which time it looks like it was his job to have a lot of sex. At the end of his reign he was sacrificed, his blood was sprinkled over the fields, and the priestesses cannibalized what was left. The Irish apparently picked two men per year, one for the Summer and Winter solstice.
Graves says that’s where kings come from. So does that mean that if nobody had been given special privileges, and if people had fertilized the fields by pooping on them instead, we wouldn’t have ended up with power hungry lunatics?!