To expand on this...
Most of what a breed is, starts with a solid foundation. So, whoever is responsible for laying that foundation so to speak, would be the one putting in 90% of the effort. Not the guy that buys birds from him that are already great. That first person deserves to have their name attached IMO. All the second person is doing is continuing the line. Unless of course they create something new. Then they get that right as well.
Take MF Leghorns for example. I think the odds of
@The Moonshiner getting one out of his current combos are like 1 in almost 2,000. Say he hatches 2,000 chicks a year for that one MF chick. So one chick a year here. Over time he creates a small flock of MFs, selling off all those other birds made in the process. Then comes time to breed those MFs once they all grow out. Then the culling and crossing back and forth to improve conformation starts. Perfecting them slowly to get them as close to SOP as possible. At this point, this is likely 10+ years of selective breeding and heavy culling. At last he finally has a stable flock of MFs to sell a few every year. He is the one that deserves to attach his name. Not the guy that buys a trio and then breeds them together and gets instant MFs. Sure, that second guy will have to cull. It's not as simple as printing perfect chicks. However, he's not going to have to do even a fraction of the effort that Moony put in.
Does that make sense? Jeez that was a novel. Sorry guys!