I actually think he is ILI, which I definitely did not suspect in the past.
In the interview he seems to have a really good understanding of the situations he's been in and sort of how things are run in the hood or wherever, which I think are related to both Ni and Te, respectively. He also takes a long term view in life, and think that extends to his albums and his views in general. He also is very level headed and candid about himself and others, which I also relate to Te ego. The music he writes is very gritty and real world so to speak which appeals to me. I think he is definitely IP and most likely Gamma.
It's probably also worth noting that Tyler the Creator, who I type SEI, hates him and he is friends with Earl Sweatshirt, who I think is ESI, and Mac Miller, who I think is SEE.
Here is a bonus interview just for the hell of it.