It really depends on age - cockerels seem to get reddened combs early - they looks like pullets to me in your photos. But again how old are they?? You can also post at "what breed or gender is this."
Glad you could join the flock! They all look like pullets to me Most likely a hybrid laying hen, for example ISA brown or similar. Please do pop by the what breed gender section for further advice ~ https://www.backyardchickens.com/f/15/what-breed-or-gender-is-this