I think silke is right (i agree with a lot of silke's typings), although there are a lot of photos of him where he doesn't have that blank expression that LSI-Se often have in photos and his eyes show a lot of emotion and charge when LSI-Se eyes often appear the opposite.

LSI-Ti doesn't work well, because he's pretty adaptable and has better quantity of focus and likes attention so much and is comfortable with it. Doesn't have that adherence to just one major interest and life work like LSI-Ti usually have. His energy is also always on, even when he's not working or interacting with someone, which is somewhat at odds with being an LSI-Ti.

ESI-Se might be it, but he seems kind of technical to be one, although I can be pretty into being technical too and the Fi subtype is supposed to be less technical than the Se subtype.