Well
Asian mythology is the most ancient and so you'll find elements of that for sure cause the classic hero elements are in all hero stories but that's not what Harry Potter mythology is based on, it's part Arthurian and part Anglo Saxon and part Celtic, it's just a mish mash of stuff.
http://fathom.lib.uchicago.edu/1/777777121870/
All new mythologies are based on the mish mashes of the past, nothing wrong with that, the past is prologue.
