I'm not certain for being an Ne dom, but I'm quite certain it exists within my stack (somewhere)....Regarding I/E, I actually become very extroverted when spurting out humor, which mainly consists of word-play/puns and hypothetical situations. Yet when I delve deep into a problem and use creativity to devise a Novel solution, I am very introverted. I created multiple new theorems in the Mathematics department for fun, however, most (if not all) relations were already discovered. I'll have thoughts/questions randomly pop up within my mind, then analyze it depending on context. I also enjoy creating my own philosophical viewpoints/quotes, pondering about future scenarios (using past patterns), and even writing poetry...So, when Ti is coupled with Ne, introversion may tend to follow whereas if Ne is coupled with Fe (possibly with humor), then extroversion follows.
When I was a kid, I would annoy my family by asking a stream of continuous "why" questions. At my previous jobs, I was constantly criticized for my lack of attention to detail, mainly because I enjoyed sharing my thoughts/ideas once I had a knowledge base to derive new relations. I enjoy connecting with people (Fe) to gain further understanding in regards to questions, and expounding my own viewpoints in depth (Ti).