Two major corporations, each with a large stable of familiar favorites, continue to dominate the frozen entrée and ready meal space: Nestlé with its Stouffer’s, Lean Cuisine, Life Cuisine, and Sweet Earth brands, and Conagra Brands, which boasts a lineup that includes Banquet, Healthy Choice, Hungry-Man, Kid Cuisine, and Marie Callender’s. In addition, privately held Amy’s Kitchen reigns over the natural and organic section of many supermarket freezer cases. But newer companies such as Tattooed …