I suppose I'll get a lot of controversy on this, but...
Years ago we used to raise 50 cornish cross a year for the freezer and just fed commercial feed. For the past 15 years or so we've raised multiple succeeding flocks from pullet chicks to laying hens for eggs, usually not more than 8 or 10 layers at a time. We started with commercial feed, but somewhere along the line my wife developed a recipe for a high protein feed, a mash recipe and a separate scratch recipe.
We cook the mash in large enough batches to last several weeks and store it in the freezer until a few days before needed, then allow it to thaw in the fridge. 4-5 days worth are stored in a container in the fridge for daily use, then the morning's portion microwaved enough to take the chill off before feeding each morning. We also give them appropriate scraps (apple cores and peelings, veggie scraps, and even meat scraps). Around noon we open their scratch container (closed in the morning) and also feed a treat consisting of perhaps a cup of raw sunflower kernels. Occasionally, when digging in the garden, we collect worms and feed those as well for a snack. They don't seem to care for meal worms. When we want to call them in to the pen after a time of free ranging, we rattle the container of sunflower kernels and they come running.
I don't have the recipes in hand, but both custom feeds are designed to provide a complete diet, including greens (kale, beet tops, etc.) which are chopped and folded into the cooked mash before putting it into containers for the freezer. Emphasis is on high protein. The scratch, which I sometimes mix, includes mostly hard red wheat, oats, rolled oats, a rolled multigrain, and cracked corn.
It's neither he cheapest solution, nor the least labor intensive, but we're satisfied with doing it that way.
Our current flock is only five black australorps after the neighbor's dogs killed three. One of the five has changed sex...he/she has a gorgeous comb and wattles and crows loudly and frequently. We had a suspicion when we caught him/her on top of a hen several times but weren't positive until the crowing and comb. We asked a friend who is a chicken expert and she confirmed that indeed, that happens.

So we are down to four laying hens, with only three laying, perhaps residual trauma from the dog attack during which one of the survivors was badly mauled.
We have eight week-old New Hamps in the brooder. The australorps were wonderful, but we switched breeds so we could more easily tell the difference between generations.
Comments expected and welcome.
Maybe this should have been in the "Introduce Yourself" forum!
Optiker