Yes, I think that's it.

Here's the hierarchy in my opinion

Absolute worst - SAD - standard american diet, lots of soda, packaged junk food, juice, sugary lattes from Starbucks, lots of crap fried in seed oil

Not as bad - Standard "healthy" diet- the way I was eating, before carnivore. Lots of whole grains, very limited junk food/sweets, lots of fruits and veggies, limited meat and when, then mostly chicken. Low fat. Mostly avoid animal products, though not vegetarian.

Best - carnivore. Or at least low carb/keto.