Nobody
Golly. I know it seems silly to be surprised by anything about Trump at this point, but still, this caused me to manage it.
I can’t imagine saying this ONCE, let alone so many times it goes on for two minutes and ten seconds. His fans would say it’s just theatrics, just being The Donald, yadda yadda – but there’s no space between just being himself and this grotesque string of claims to be omniscient. Any possible space has been obliterated as we’ve watched him performing Man Who Thinks He’s Best At Everything And Knows More About Everyone Than Anyone.
Also, it occurs to me, it’s sort of explanatory. This is why nothing gets through to him, ever. He really does think he knows more than anyone else, and not just about his chosen subjects but about everything. He knows more about designing a stealth battleship than anyone – what you do is, you make the hull bigger, you make it beautiful. He and he alone knows that. He’s like a god, only better, because he knows more than any god.
Remember when one of the popular mantras was how crucial it is to have high self-esteem? Yeah.

Did anyone say Dunning–Kruger? Donald Trump is the undisputed King of the Dunning–Kruger effect! Nobody knows more about Dunning–Kruger than everybody who is not Donald Trump. (Uh, did that make logical sense? Never mind. It sounds good.)
The battleship thing is especially notable because it’s a literal case of “all of this has happened before, all of this will happen again”
https://en.wikipedia.org/wiki/Vasa_(ship)
Yes but needing high self-esteem doesn’t contradict the need to also be humbe.
As far as I understand it high self-esteem is about having the confidence that you will be able to deal with the problems you are facing. It doesn’t mean you think you already know how to deal with these problems.
You can be humble in the sense that you acknowledge that at this moment you don’t know a lot of things you need to know in order to properly deal with the problems and at the same time have enough self confidence that you think that eventually you will figure it out.
There are a few things that I know more about than literally anyone else (at least anyone who hasn’t read my PhD work, that’s the nature of having a PhD), and it can irk me when men attempt to mansplain to me on these topics (one of them is something a certain type of man thinks he knows a lot about), but…it’s not something I go around saying in public.
I know the back of my hand better than anybody.
As I have previously said in reference to one or two other glaring cases, I wouldn’t rule out the possibility that he was created in his entirety by a freak fluctuation in the Dunning-Kruger-field.