From the tone of his book, he always lived with an undercurrent of anxiety and security seeking which propelled him to go into excess of "fun" and "excitement" to avoid his personal and family problems. He was the posterchild of escapism and avoidance so that it why originally saw him as 6w7. However, speedy made a possible suggestion of 3w2.
ESFJ: people pleaser tendencies, image conscious, "controlling", guarded/ somewhat self controlled as a child, security seeking family man, very private and somewhat inhibited, always wanted some sense of belonging to a "group", ambition, and determination.
ESFP: had many spur of the moment adventures as young child, lost his virginity at 14 as a bday gift from a good friend and just "went with it", likes to live in the present and not "plan" his career, was self proclaimed daredevil before he became famous and loved taking on "challenges" from friends, acting, and dangerous physical activities, known for impromptu humor, "acts like a kid in an adult body".
Those are just some of the potential arguments I saw from his book.