I think if you're wanting to create a Group, possibly to include all, it should be called something like Catalan Breed Club of America, just my 2cents worth.
As far as APA goes, there has to be at least 5 breeders that have bred and raised the birds for at least 5 years, and so far from what I'm seeing, I don't think there is enough people that have had them for any length of time to even qualify for doing that yet, imagine 5 breeders, 5years each for each feather color. If I had to take a Pole, I'd guess there are more Partridge and Wheatens out there than the Creles and Blacks, you'd start with what most people have and for the longest time to get that feather color approved first, and then go for the other feather colors after that, it would take a combined effort to get it accomplished. Marans have been in this Country for several decades, thru several different breed groups and only just now getting to where its even possible for them to be Approved.
A Groups would have to be organized and then a Breeders List made showing who has what and for how long they've been breeding them, just to get started, that would tell where the numbers are and where to begin. Currently, it would not be a good idea to Show, the reason I say this, is because there are not a sufficient number of birds nor breeders to make the Showing of them count for anything, and it would put the few birds or numbers of birds at risk of Poultry diseases when they are so few in number, which would be a demise of Valuable breeding stock that could be used to place more birds in peoples hands that would show when the time came for Shows that would count toward the Breeds APA acceptance.
It's possible, it will just take alot of Organizing and Cooperation in order to do it.
Victoria