So the lamb and Rice has no rice in it? I doubt that, with so many options the data is lacking they make all kinds of different mixes and cater to several age groups even. It needs to be broken down into the exact product that is a problem or it's just shot gunning the brands listed.

I think all these " dog food" threads kinda suck.
Been reading them for YEARS on several forums.
Have known many people that feed the cheapest crap there is and their dogs live long lives.
I DO feed my dog good food but for no other reason than he eats / shats less.