I was called Harry Potter all the time when I was about 10 years of age.
But truly, he's not ISFp. I couldn't chase after a Basilisk with swords and daggers or do anything Harry did.
This is me and my dual being scientific together
I vote for Harry as ESI.
Ron as SEE.
Hermione as LIE.
Snape as LSI (maybe LII).
Ron's twin brothers: IEE (both of them).
Ginny: Who knows, or for that matter, cares?
Classical socionics: (), ILI-Ni
Dual-type theory: INTp-ENTp
OK I have new opinions on these characters.
I still think Harry is INFj. He has Fi leading IMO and I don't think Se because he's all anti-authority, which is frequently a Delta trait, and he is described as messy, wearing messy clothes without caring, and clumsy. So I think INFj > ISFj. He's a fictional character so there's only so well we're going to be able to type him.
What I've changed my mind about is Hermione. I think she's ENTj. I thought INTp because I assumed she's an introvert but I don't know why I thought that. I think she has an Ej temperment.
I don't know what type Ron is but since Rowling doesn't know Socionics there's no reason to assume she'd make Ron and Hermione duals or anything. But he could be ESFp or something? Not sure. Ep temperment seems very possible.
I think Snape is ISTj. I think Draco is ESTp.
It ain't what you don't know that gets you into trouble. It's what you know for sure that just ain't so.-Mark Twain
You can't wake a person who is pretending to be asleep.
for some reason I can see Hermione as INFj