Whatever his type really is, he's had a lot of personal loss in his life. Sad Keanu comes to mind. I think that accentuates his Ni/Si to some extent, regardless of his actual type. I'm not sure what that makes him, but I wonder if that has something to do with why he's so nice. Like he just doesn't see the value in not getting along with people.

He definitely seems enneagram 9 at least. But enneagram 9 does seem more related to emotional trauma.