His narcissism and his need to create art makes it sound like he was an EIE-Ni. However, he could've been an LSI-Se or LSI-Ti.

One thing, is that he seemed quite adept with Ti and Te for an EIE-Ni, but the planning and cautiousness may have just been really good usage of Ni.

I believe he was an EIE-Ni, but I am open to arguments for LSI-Ti and LSI-Se.