What are harmful/fillers in these ingredients?

Ground yellow corn (makes more poop), chicken by-product meal (leftovers after they're done making chicken nuggets i.e. feet, beaks, etc.), corn gluten meal, animal fat preserved with mixed-tocopherols (can you say chopped up doggie bits?), soy flour (causes allergies in lots of dogs), sugar, everything i've just listed is absolute garbage. It should either not be there or should be further down in the ingredients list. meat and bone meal (what leftover AFTER they make bologna and hot dogs) Everything else is vitamins and preservatives.