@Moon @rasterman @djsumdog @olmitch call totally fair descriptions in both cases.
Mystery Babylon almost certain will/does count as such.
My concern is just being specific in the sense that saying, "Gnostics believed you could get to an enlightened state through depravity and debauchery" was certainly true of at least a few, but is not representative of the whole.
Neoplatonists and Mandeans would have had little in common even if they did recognize that bit in each other. " " " Manicheans.