The world is more fleshed out, the magic system is more clearly defined, the characters are nuanced, the stakes feel more real…

Lots of things are cultural phenomenons, that doesn’t mean they’re the summum of quality in their genre. Harry Potter was the birth of YA, but since it has been written, much better books have been published - Scholomance trilogy among them.

If you’re into it, Scholomance by Naomi Novik should be right up your alley. Leagues better than HP (yeah I said it).