look up BARF food, it's the best for the dog IMO, barely processed. we buy it in deep frozen big packs (essentialy frozen whole meat, not just some meat pasta) 1-2 times a month. The brand is Graf Barf, dunno if it's in the US.
Consult your veterinarian for dietary advice for your specific animal. You should trust their level-headed advice over emotionally-driven decisions from owners.
It’s refreshing to see a skeptical comment like yours, and I too find it interesting a lot of people reporting jumping ship from one trendy diet to another.
I've also seen a friends dog get very sick from raw food, but from bacteria. Required a vet visit for antibiotics.