It is possible that you have Isa Browns. They are a cross between a Rhode Island white and a Rhode Island red and look much like your Girls. I have two, and they are excellent layers!
OP, your birds are a mix of birds that result in the ability to sex the chicks at birth by the down color. The females hatch out one color whereas the males hatch out another color.
More specifically, your birds appear to be a red/golden sex-link.