And I can give you links to websites that find Christian ideas, Buddhist ideas, Hindu ideas, whatever, in Harry Potter.
It's like the Rorsach blots joke - "What do you mean, I've got a dirty mind? You're the one with the filthy inkblots!"
Quests for truths, or untruths, in HP will tell you a lot about the reader. HP just isn't deep enough for that kind of stuff, people might as well look for occult references in cloud formations, at least then they'll be getting some sun and fresh air.
And I can give you links to websites that find Christian ideas, Buddhist ideas, Hindu ideas, whatever, in Harry Potter.
Authors have one point of view in mind when they write books. People may bring to the written work their own preconceptions and leanings, but the author is master of his creation and writes with a singular intention.
HP are not Christian books. They are, however, flavored with bits of Hinduism, Buddhism, Platonism and ritualistic occultism.
Same old, same old.
"Secret, esoteric knowledge" is all cut from the same cloth in that it is not Christian. Nothing is hidden, says Christ. In Him, all is revealed.