Looks like either a poor quality Barred Rock or a mix. Most likely a mix.
Again, im going to go with pullet.
Also, is that a little bitty chick tucked in your shirt on the last pic?
EDIT: It also might be a poor...
For the one developing red feathers, it could be a black sex-link
As for the crested ones, polish cross?
The last one could also be a black sex-link, but I'm not sure, maybe a Australorp
Do you think you could take...