User blog comment:Herald of meridian/Yen Press Volume 1 Release Terminology List/@comment-125.60.240.201-20141120075622/@comment-5230978-20141120120708

Cannibalism Ritual Book is the kanji translation and Cultes des Goules is the furigana, so yes the correct name Cultes des Goules. Even the actual Js06 transaltion has Cultes des Goules.

Talking about Grimoires, I checked Index 1's raw and Legemeton is the furigana (real name) and Lesser Key of Solomon is the kanji translation. Also, I checked for the Nameless grimoire, but there are no furigana or kanji that mean "Unaussprechlichen Kulten", so the Yen Press version is correct about that (where does Unaussprechlichen Kulten and its kanji come from?). And for the Moonchild "the Book of Crowley" is the kanji translation and "Moonchild" is the furigana, so it should remain unchanged.