ESFJ

Fe: Booth sympathizes with people instantly. He always scolds Bones in a way when she’s too blunt with others, and tells her to control her outspokenness. Booth has been teaching Bones how to read others’ feelings and also to repress her tendency to give voice to every fact. Booth can easily tell when someone is worked-up, anxious, happy, or… attracted to Bones—in 4×19, Booth tells Bones to expect the professor to confess to her at halftime of the show; at the end, he approaches Bones with an invitation to have a coffee with him. Booth’s dominant Fe makes him a great, faithful soldier. He’s not only good at reading other people’s feelings like an open book, but he almost always gets what he wants by manipulating and pressuring the suspects’ emotions and morality. Booth is more than joyously willing to express his affection for Parker (and later Bones). He’s great at connecting to others, thanks to his dom Fe, which grants him a natural charm that just attracts anyone to him, making it easier for others to like him. Booth is also childish.

Si: Booth himself admitted he has a hard time dealing with changes in his life. He prefers to rely heavily on experiences, sticks to rules and is very meticulous. He will not betray any of his friends, ever, and due to his Si, chivalry isn’t an unfamiliar concept to him. Booth has a tendency to be anxious about his past, all the while remembering everything in great detail. When he shares his past with someone, he does so from a personal, symbolic angle—he also expresses how it affected him, thus what personal interpretation it left in him. Booth is reluctant to try out new solutions, preferring to trust already used methods that have already been proven good. He doesn’t change his habitual way of investigating a case. He has a hard time letting go of his childhood, in which his violent father beat him up nearly everyday—it also makes him insecure that maybe he’s too a bad father for Parker.

Ne: Booth isn’t great at coming up with individualistic ideas. He’s also fast to get tired and worn-out when Hodgins goes on a ramble about something, and Booth doesn’t have the patience to listen to his thread of thoughts, because it’s too intermittent to him. The other reason is that he isn’t interested in all those probabilities, placing more value on past experiences, because he can trust those more easily.

Ti: Booth unshakably believes in God, and sometimes has a hard time following Bones when she talks a mile a minute about one of her revelations in connection with the case in science language. However, Booth has a very healthy Ti, which makes him great at analysing a situation as it is, and finding the best solution to it. Hence his ability to deal well with hostage situations.

Notes: I have seen types like ISTP, ENFJ and ESTJ for him, but realize they are merely based off on stereotypes, which is why none fits Booth when you look at his thought process. He’s a very well-developed, healthy ESFJ with enough intelligence to make him bearable for other, more rational people… like Bones. A personal thought: he’s literally the only ESFJ I like, both in real life and in the fictional world, because the others aren’t as mature as he is, hence their non-deliberate tendency to irritate me.