You’re right — Levi is a primal influence. I value Rhine’s work enormously because, critics be damned, he verified the existence of a non-physical aspect of life. Levi’s cultural influence was, I think, felt more through those who walked in his path, such as HPB. But, yes, he was the earliest progenitor of the modernist occult revival. I am publishing a new translation of Doctrine and Ritual of High Magic in early 2017.