Wow! I learned a new word today!
ambivert (noun)
One who falls between the two extremes of introversion and extroversion, possessing some of the tendencies of each.
In other words, someone who’s on the cusp between, say, ESTJ and ISTJ for instance. Do you think I’d get odd looks from people if I tell them “I’m an ambivert”? You think they might threaten to lock me up?