Only the first one is a girl, rest all roos. The barred one on the second picture looks girlish, but has too many shiny feathers on the wings, which says boy. They are mixed breeds. The rose combs are probably Wyandotte mixes, the boy with feathered legs is probably Marans mix.
I am doing something similar: I keep 4 families (1 cock and 2 hens each) and breed every 4 years. I hatch 10 -15 chicks from each family and keep one boy and 2 girls only. Next time I breed, boy A will go with girls B, boy B will go with girls C, boy C with girls D and boy D with girls A.
IF YOU BREED SPLASH TO SPLASH, YOU GET PURE SPLASH.
IF YOU BREED SPLASH TO ISABELLA, YOU WILL GET ALL PURE BLUE BIRDS (THEY WILL CARY ONE COPY LAVANDER). THOSE BLUE BIRDS WILL HAVE SOME GOLD LEAKIGE, ESSPECIALY THE BOYS.
Most probably your white roo is Rececive White and hiding barring behind it. That is how he is producing barred chicks with hens of different color than him.