I'll repost what I previously wrote on an older thread:
"The more Ni you have in you, the less competent you will be at real world stuff (though every introvert will have this problem to some extent; Ni to a greater degree annihilates objective reality). This is what makes typings like IEI for Obama so highly amusing but flatly wrong. Obama is highly competent at outer world stuff....as just one example, he was an energizer-bunny star fundraiser for the democratic party just as a freshman senator. He never says anything that is remotely rebellious or nonconformist.
Ni is a rich, highly nuanced, detailed inner world that makes the outer world look like a needless distraction (or even somewhat non-existent). When Ni-doms find a way to bridge their inner world with the outer world, that's where you largely see them coming out of their inner world to interact with the external environment and what they bring is something original and unique. The flip side is that when Ni is in the vulnerable function, this type of existence all gets flipped on its head and what you get is a highly practical, hyper-productive, in-your-face, Type A personality workhorse."
Gordon Ramsay is a classic example (LSE-Te) of Ni PoLr