Tallywell.

Cottage cheese (low-fat) vs Greek yogurt (nonfat)

Cottage cheese (low-fat)Greek yogurt (nonfat)
Protein · per 100 g11.0 g10.3 g
Fiber · per 100 g0.0 g0.0 g
Energy · per 100 g81 kcal59 kcal
Protein · per 100 kcal13.6 g17.5 g
To hit 30 g protein273 g · 221 kcal291 g · 172 kcal

Bold marks the better side of each row. "Per 100 kcal" answers the density question — which food delivers more protein for the energy it costs. Portion row is computed live from the same USDA base values shown on each food page.