I just typed my older brother as an ESFP. I was trying to figure out what he was for so long, but after reading several descriptions, it all makes sense.
First off, my brother is my best friend. Yeah, I know we're brothers, but other than that, we have always shared an incredible bond. He's actually the one person who understands me. He gets me to hang out and be social; he's the best wing-man ever; and his social skills are amazing. Guys love to hang around him; girls want to fuck him; and he makes everybody feel like they're his best friend when hanging out. The best thing about our relationship now is that we are both forces to be reckoned with in our own way. We're on equal footing. Contrast this with high school where I was this meek, awkward, weird kid. However, I garnered so much respect because of my older brother. He always had my back, would come in the drop of a hat if anyone tried to fuck with me, and boosted my self-confidence level in many ways.
INTPs get extremely self-assured when they get older and figure themselves out. So being able to hang out with our cockiness is great.
Also, he's an incredibly deep and intelligent person though I'm not sure if other people see this because of the way he projects himself, and in all honesty, he can be extremely self-indulgent and self-destructive. I wish he would be more responsible and this is coming from an INTP who shucks responsibility till the last minute. The difference is, I'll get the job done while he will find justifications for not getting the job done. It seems just when he's on the right path that he does something to fuck it up. I want to just slap some sense into him, but he could be real sensitive and it's not my place to interfere in his life either.
Honestly, I don't know if this is indicative of all ESFPs, but he is warm, caring, has a heart of gold, and is the most loyal person I know. I have no doubt the man will go the ends of the earth to help me if I needed it. Also, he's the only person who can soften me up to give him a hug. He gives me bear hugs all the time and makes me feel uncomfortable. haha. No doubt he senses my discomfort and does this because there is nothing about me that says "Give me a hug!" I love him for it nonetheless.