Hey. how's David ENFP and Harry Potter ESTP?
I'm quite intrigued by your content; it's so different and heterodox.
David was actually typed in a DISC profile book. The things used to type David as his DISC profile can also type him as a member of the Ne-f type family in SOJT. Ne-f is the main SOJT type family for the MBTI type ENFP.
As far as Harry Potter, about 2 years ago, Akhromant (who used to have a blog on here) made an argument for Harry Potter being ESTP. Now, there were a lot of Akhromant's typings I didn't agree with, but I actually agreed with the Harry Potter one, because if we put what Akhromant said about Harry Potter to the SOJT test, Harry would have been part of the Se-t type family, which is the main SOJT type family for ESTP.
That was how I came to those conclusions. I don't know if Akhromant necessarily described Harry Potter correctly. So I might reanalyze Harry Potter at a later date. But for now, until then, he's ESTP
I hope that answered your questions