I agree that it takes a bit for them to mature, pullets longer in my opinion. None of these birds are showing very much type at this age. Maybe they are not that great (and never will be) or maybe they need time to mature. The hackles will grow to cover that long back and make them look better, but they will still have that gene and pass it on.
I suggest if you have the space, let them mature and see what you get. Keep good records with weights as they develop and pictures of what they were as youngsters and how they matured. I would look to see the faults in what I had and then would try to find a bird to breed that was exceptional in those areas.
If you dont have any luck, I suggest getting started birds or adult breeders (and hopefully the parents) so that you can see what you get and what they came from for a better idea of what they will produce.
Sooo..here goes:
Roo #1--Ok tail set, looks vertical, breast too low/neck too long, nice even comb, looks like he might have decent wing/leg length??
Roo #2 (Biggest) -His legs look too long/wings too short, doesn't seem to be very vertical, but has the best chest (higher and rounder)
Roo#3-(The one from page one) In the first pictures, he has some feathers sticking out of the front of his wing..thought that was weird, wouldnt want that to pass on if they get like that off and on....like his color...his breast is ok, not great, looks like he has long legs too...
Roo#4 -Wings look way too short, breast too low, back long
Roo#5- Same as above
Pullet-Same as above
I hate to say it, but none of these look very promising. I dont want to be a downer!!
Are they related? They all seem to have long backs and legs......
Hang on to them and we can see what happens as they mature.