This site tries to maintain articles every 18 months. The food you’re looking for is in the article Natural Balance Limited Ingredient Diets Dry and it’s in the whole group not reviewed individually. The Bison and Venison formulas do not contain any meat meals, only whole meats and they are the lowest in protein at 22% and alot of that comes from potato protein and pea protein. Might adjust that rating next time around! The other recipes are also low in protein but at least have a meat meal and not as much veg protein. Nature’s Variety Instinct LID only has 5 ingredients and has more protein.
