I can highly recommend getting Black Sex Links then to add to the CQ's.
Black Sex Links aren't quite as prolific as Red Sex Links (CQ's, and about a thousand other names), however, I find the BSLs to have a longer laying lifespan...ie they don't play out quite so quickly.
You can tell at a glance with 1st gen BSL and RSL. The black BSL (with red trim) against the red RSL (with white trim) is very pretty in the yard too.
For autosexing breeds, as some have stated, you can look at Cream Legbars, Welsummers, and Rhodebars, of the more common types. Dominiques and Barred Rocks are sexable at hatch but only from carefully controlled lines (which hatchery birds are not).
I personally would stay away from autosexing breeds and the barred birds unless you get them from reputable breeders. There's a lot of mixed breed stuff and poor quality out there being passed off under those breeds which are not sexable at hatch.
But even the hatcheries get the RSL and BSL right...as long as they don't mix the shipment or the chick bin. (No snark intended at the many fine hatcheries that provide excellent production layers...I have had more than a few of those in my flock...but never trust a feed store bin).
LofMc