Sounds like hatchery pullets are what you're looking for. They are usually sexed after hatching, healthy, and bred for egg production. They have less tendency to go broody. Barred Rocks are very friendly and easy to deal with. They will lay large light brown eggs. Any of the sexlink hybrids are a good choice, mellow and super layers of very large brown eggs.
I got one each of nine different breeds of hatchery chicks from the feed store. Enjoyed raising them and think it helped make them tamer. It is also fun being able to tell them apart, which would be harder if you get all of one breed. In addition to the Barred Rock and Gold sexlink, I would also recommend New Hampshire, Black Australorp, Buff Orpington, and Easter Egger (EEs are often sold as Ameraucana). All are calm and docile and excellent layers, and they are very attractive as well.
I would not recommend Leghorns. While good layers, they are a bit more aggressive and flighty (meaning they can fly over a 6 ft fence - mine did!). I did not get hatchery RIRs, as I read that they can be a bit aggressive also, but have no personal experience. (These are also called production reds, as they have little resemblance to the true heritage Rhode Island Reds, which are dark rust colored .)
If you don't want to raise chicks, check at local feed stores for older pullets. They will cost a bit more of course, but you don't have to mess with chicks. If you purchase from a local breeder, you will want older pullets, as breeders generally don't sex chicks after hatching.
Have fun researching! Another tip is to build coop/run
larger than what most people recommend. This will give your hens a stress free environment (happy chickens = more eggs) and will allow you to get more chickens than you originally thought you wanted. (And you
will want more; they are addictive! BYC calls it Chicken Math.)
Good luck and keep us posted!
