I work with an ESFP who does great vocal impressions... if I were to connect it to type, perhaps it's Fi empathy + Se picking up on nuances of sound, movement, etc. I would go with Se-dom in general though.
"Charlotte sometimes dreams a wall around herself. But it's always with love - So much love it looks like everything else. Charlotte Sometimes - So far away, glass sealed and pretty." - The Cure
i dont know, but what i do know is that different types tend to imitate differently. if you take chapelle for example who is pretty clear Ne dom, he doesent make some ultra realistic and accurate imitations, but sort of imitates those things that make that person what he is, or at least his twisted version of it.
"Where wisdom reigns, there is no conflict between thinking and feeling."
— C.G. Jung
Imitations isn't exactly being creative and have little to do with real acting. Aside from the voice your born with having a great deal to do with the range of what you could potentially imitate, all other physical aspects are easily enough replicated.
I never done or tried to imitate someone else myself and I don't see why I should. Besides my voice is rather limited so I doubt I'd be any good at it myself. But hmmm, I don't think cognative functions are of considerable influence when it comes to imitating others.
Robert Downey Jr. does excellent on accents and also gained an oscar nomination for his role as Charlie Chaplin, mostly beacuse of the perfect imitation of Chaplin's voice and posture.
Downey is a very artistic ENTP so far I know
I do also very good at accents, I hear that frequently. That's why I voted ENTP, but I guess ExxP 7s are generally good at it.
BTW what type was George Carlin? His imitations included all the ideas from said person, all the vocabulary, but none of the voice or none of the mannerisms. GC seemed much like an I guy despite his great skill in performing arts.