Golden Comets are the label that some hatcheries sell their Red Sex Links under and they are usually pretty good with kids. However, if you're wanting sex link chickens, I would suggest Black Sex Links (Black Stars) instead of Golden Comets. My Black Sex Links have always been friendlier and...
I have had most of the breeds on your list and the friendliest ones are the Australorps and the Orpingtons. I personally like the Australorps a little better as they are better layers.