I've been using big-name feeds too, but I'm always curious about what else is out there, especially something I can control myself.
My base feed is a pellet mix that I make. It's got a bunch of grains, some bean meal for protein, and a few minerals mixed in. The key is to make sure it's a complete meal.
https://www.kawise.com/blog/how-to-make-your-own-chicken-feed-pellets
And yes, I definitely supplement! I'll toss them some greens from my garden like kale and chicory. Veggies like pumpkin or squash are also awesome additions. It just feels good to give them something fresh and homemade.
I'm a big fan of composting too. I mix their bedding and droppings with other scraps. It works out great because it helps me manage waste, and I get amazing soil for my garden in return.
My routine is simple: pellets in the morning, let them free-range, and then give them some of the fresh stuff in the afternoon. I'm really curious about that local farm feed you found. What's in it? I'd love to know!