Moral philosopher Harry Frankfurt got at some of this in his celebrated book On Bullshit.

Moral philosopher Harry Frankfurt got at some of this in his celebrated book On Bullshit. Bullshitters don’t lie, he said, so much as treat the truth as irrelevant, orthogonal to their purposes. But even Frankfurt’s bullshitters are, on some level,choosing to bracket considerations of truth value. That implies they are aware of such considerations; they know what they’re doing.

There’s no evidence that Trump is aware of them at all. He’s a bullshitter who doesn’t know he’s bullshitting, because he doesn’t know that there’s any other way to communicate.