I have a Buff Orpington, Barred Rock, Australorp, Ameraucana, Red Sex-Link, and a Silver Laced Wyandotte.
Buff Orpington- Super Sweet, Doesnt like to be held but she loves to sit on my knee and hang out while I pet her. Usually leading to a cute little chicken nap. I highly recommend
Barred Rock- Super Curious. Fun to watch. She is the smallest of my flock and so she is the most skittish. I like the breed but my experience is that they are kind of standoffish. Again that could be because of her size though.
Australorp- Talk about adventurous. She is the first to do anything. She is my buddy and although she doesn't like to be held as much she ALWAYS is the first to come up and sit by me and get pets. Again leading to chicken nap. Highly Recommend
Red Sex-Link: Not very skittish but she doesn't like to be held or touched. When I am around she will hang out around me with the other chickens but if you go to touch her she doesn't want anything to do with it. She also really doesn't like treats. Not even Mealworms, which blows my mind since anytime I give them to the other chickens they just lose it.
Ameraucana- I got a Roo so I don't think his behavior reflects the breed very well. I have heard a lot of great things about the hens but Skittles is the most standoffish, flighty chicken that I have. Sadly I must get rid of him, but I am going to try and get another hen in the future.
Silver-Laced Wyandotte- I can not express enough how much I love this chicken and this breed. She is my pal. She runs up to me anytime I am around, and when I sit down she will jump onto the bench and from the bench to my shoulder. Where she settles down and makes the most adorable chicken purr sound. Yes you must beware of the all tempting eyelashes she sometimes goes for and poo is always something to ware of but man the cuteness outweighs both those things. She is a such a sweet chicken and she loves to be held truly by anyone. Highly Highly Recommend.
I don't have much experience but I have heard and await to experience myself, that a lot of times the sweeter more social breeds are also frequently broody ie Buffs, Australorps, Wyandottes. I have studied up extensively on how to handle broody chickens and so I wouldn't let the idea of a broody hen scare you away from a breed. Just be aware that it is a possibility and be ready.
I have also made a concentrated effort to socialize my chickens since I first got them from the hatchery. Lots of love and exposure to people. They are more like pets to me and so I wanted to make sure they were comfortable around people. I had a grandfather with a farm and I remember running in fear when ever I saw the chickens because they were M.E.A.N. With those pleasant memories in the back of my mind I did all that I could "with in reason" to socialize my chickens. And so far it seems to have paid off!
From one newbie to another good luck!