Thanks so much for the replies! I found out a little more info about the chickens. They're from Murray McMurray Hatchery, and looking at the pictures in the catalog, I'm guessing the first one is indeed a Red Ranger! That would explain why it matured so quickly.
And yes, I think #2 is a Partridge Rock! The pictures online look much better than the one in the catalog. Thanks again!
The first could also be a New Hampshire and the second looks like a Partridge Plymouth Rock, but it may look different than the pictures in the catalog because she still has juvenile plumage.
I agree. Technically speaking there is little or no difference between the Production Reds and the hatchery quality New Hampshires and RIRs of most hatcheries. Hatcheries are mainly concerned with egg production rather than preserving APA standards and as a result are non-discriminating about which red gene birds they breed together as long as they are good layers. If the PR offspring tend toward a darker shade of red (closer to mahogany), the hatcheries market them as RIRs. If they tend toward a lighter shade of red (closer to chestnut), they market them as NHs. If their red gene offspring have a shade of red somewhere in-between, or if the red shading is very uneven, they market them as Production Reds. Your first bird was probably marketed as a Production Red, but could have been marketed as a New Hampshire.