i think with all familys certain fanciers cultavate  lines that they want and concentrate on them  possable that also happened with janssens  as if you look at brasspennings  those bl cheqs look like peas in a pod  look at the freek romain reds  the deprut as well  just different lines cultavated  but still the main thing is the 2 common denomanaters winners that breed winners  
cheers Alan