Are you looking for largefowl or bantam? Some hatcheries offer large,but I am thinking the color may be more cuckoo and type more commercial.The Leghorn clubs of UK,Holland,Germany,have nice barred and good colorbreeding advice.
I don't have any pictures, but the barring was not as crisp as on my son's barred rocks but that is what I requested for our Dominique Leghorn bantam project. We crossed a Dominique bantam male over some white leghorn bantam females. We then used the barred leghorn male over the rose comb females which were mainly white with shadows of the irregular barring. We are now breeding from the F5 generation. The color and type are coming along nicely but we have some work to do on the rose combs. Maybe soon we will have something to share.