I'm guessing you know the breeds? The first one looks like a pullet at 18 weeks...not looking ready to lay any time soon though...I had a few that waited 30 weeks to lay, so just be patient
The polish looks kindof rooish to me. I don't keep a lot of polish. I have had bad luck with them getting picked off by predators, but everyone seems to say that the girls tend to keep their doos more neat and tidy (like a nice round cotton ball or bee hive hair doo) while the boys tend to rock the punk doo.
Not so sure about the stripy guys...do you have breeds for those? I am leaning towards pullet.