Yeah I am not perfect and use terms interchangeably. Like "Hatch" to describe "green leg BBR".
I keep different size, shape and weights. Gamefowl and my yard vary tremendously. I keep variations on purpose so I have options on which direction I want to breed. I have Powerful Heavy Birds and then I have a smaller flying birds, but most are in between and balanced.
If I wanted to breed for something specific I could do it because of the variations I keep.