A lot of chickens are barred. I have some bantam sized barred barnyard mixes. One is a pullet with amazing clear bars, and the other is a cockerel with a large black splotch on his back.
Dominiques look just like barred rocks, except they have a different comb. Barred Cochins also look like barred rocks, except they are very puffy and feather-footed. Barred rocks ALSO look almost exactly like cuckoo Marans. Hope I helped you!