As an outsider European, Trump certainly has an unusual charisma. I happened to watch some of his tariff press conference while flicking over TV channels, and I get why people are attracted to his public persona. He has this strange hypnotic tone that delivers absolute nonsense in a reassuring way, and goes a bit shouty every now and then when attacking something. For people that actually believe what he says he must really have them hooked.
Along with the other points you made, rarely showing stress, always having a comeback with no care for the truth make him unique.
Vance is not even close.