Ok, this is just my experience, YMMV:
I go for LOADS of eggs plus whatever meats are on discount sales. These days it seems often to be pork chops and bacon. Fish I only buy if wild. Mostly sardines, mackerel and tuna, despite the mercury. But biggest bang for the buck is still eggs. I also add daily amounts of walnuts, almonds, cheese (no dairy issues here).
Disclosure: After a potential heart health scare at the end of last year, I have dug into nutrition topics and have turned from vegetarian to low-carb. Not carnivore, as such, but substantially relying on eggs/meat/fats plus non-starchy vegs. Working great for me. DH is still a carby, but then he doesn't seem to suffer from metabolic syndrom.