Sex my chanteclers!!!

[ColdSpringsChickens]

Hey everyone,
This is my first flock of chickens and know that these guys are always hard to sex. I've attached pictures of them. Theres two brown, two partridge, and two white with brown which I've not seen online. So I've come to the experts to see what you come up with!!! Let me know if you need better angles or more pics!

 

[oldhenlikesdogs]

Everything looks like pullets to me. How old?

 

[NatJ]

The white with brown look like some White Laced Red Cornish I've seen.