Blood sweat and tears... That's what makes it worth it in the end!
I think these are production strain. Probably quite different than birds of your childhood unfortunately. They are friendly though.
They are probably closely related if not the same. We ate the scrawniest little roosters you have ever seen. Grandma had leghorns because of the white eggs, the size and how many they laid. She sold the eggs at the Super Fair store in town.