Thank you,
https://hal.archives-ouvertes.fr/hal-01606976/document
Based on this I think B^sd or (B^Esd, i.e. OB), are both possible barring types the 55 Flowery has, but, OB seems more likely. I think it would be cool to make some 55 Flowery mixes, if the backcross(F1B) males turn out white(like a 55 flowery) than OB barring is the more likely type of barring, if the F1B males are far less white than a 55 flowery rooster than they are possibly the B^sd and some unknown component has been removed/lost through the cross breeding.
(The 55 Flowery roo has a smidge of red flecks, but they are practically white, with age roosters become more white after each molt, hens do as well).
I want to know why the chicks aren't consistent down colors. Just different breeding lines maybe?
Examples, pictures from websites selling 55 Flowery chicks:
View attachment 3351429View attachment 3351431
View attachment 3351432
Also why do you think the females have muted colors, why don't they look more like the light brown(e+) leghorn chicks?
Pic of light brown leghorn:
View attachment 3351442