I think the white earlobe was the giveaway.
You have a single comb light brown leghorn, I believe. (There is also a single comb dark brown variety and the Danish brown leghorn, which has a single comb.)
Leghorns are the best egg layers, and they lay large white eggs. The white leghorn is the best layer, but browns are very good also. The roosters are very colorful. The browns have better coloring for hiding from predators than the whites.