Protein in terms of protein / calorie ratio of food tilts protein sources to meat and dairy. Easy way to compare foods and meals is to compare grams protein per 100cal of a given item. Things like meat, cottage cheese, yogurt, etc., top the charts.
So if you want to maximize for protein consumption without putting on fat mass, you tend to look for meat, dairy, and things derived from them (whey protein isolate).
So if you want to maximize for protein consumption without putting on fat mass, you tend to look for meat, dairy, and things derived from them (whey protein isolate).