I admire Tolkien and C.S.Lewis and consider their books uplifting for children and adults not because they have the label "Christian" but because (a) they were actually good writers, especially Tolkien, and (b) their books are not only finely crafted, but lead the reader a little higher in understanding, promote simple virtues, the characters go through internal struggles and become morally strong. I am not against "occultism" in books, it's like money or strength - how it is used is paramount.
Rowling's books, OTOH, are crappily written, the characters are shallow, selfish, cartoonish, there is no good or evil, just two teams. The only reason Harry is "good" is because someone "bad" wants to kill him. There is no character growth, and her use of the occult gives it a glimmer of attraction in a somewhat perverted manner. She actually did a tremendous amount of research to make it very authentic.
She appeals to the desire to have power over others, not power over self.
I disagree with every word you just wrote. Couldn't you have qualified it by stating that this is your not-so-humble opinion?
As an aspiring writer myself, I have learned quite a bit about characterization from Rowling. It's one of her strengths - not so much with the major characters, but the minor ones. Now there's a gift, to have a hundred or so intersting, unique secondary characters running about.
Her "research" was mostly into myth/legend. Like Tolkien's was. Can you give me an example of how her magic glorifies the occult? And don't just say "because it's magic".
And finally, if you don't see a difference between a side that wants to rule the world, subjugating those who are different, and the side that wants to stop them I pity you.