And there are other possible hypotheses. The test you just took shows one of them. It reveals your dominant function without using any arbitrary MBTI formula. And in your case, the Ti also matches for your type. But my result did not precisely match up with INTP.
If I were to say that my type is an introvert, what is that a type of? Is it a type of behavior, a type of cognition, or a type of attitude? And if N is my dominant function, what is it a function of? With a little searching, you will find that the answers to these questions reduce to dead ends.
Psychological Types was a chore to read at times, a bit dated, and the type descriptions were fascinating but sometimes vague. They depended upon how well Jung himself understood the types, particularly some of the more mysterious ones which he described as feeling-states that Jung may never have experienced directly. And he says nothing whatsoever about dominant functions being determined by I/E and J/P (closure/non-closure). That is a Myers-Briggs fiction, not a Jungian one.
Anyway, I found out what an over-concern with typology in general was over 20 years ago: a distraction from doing my personal growth work. Being overly concerned with determining one's type can lead to an endless empty black hole.