Have you tried Eagle Pack, Natural Balance, Solid Gold?
Those are about the best from those lists.
I'm not sure if it is the corn in the RC because Ellie used to eat SD also and wasn't allergic. Now I don't know if she has an acquired hypersensitivity to corn from eating the RC or if it is one of the other ingredients.
Anyway, please go here and report your problem with Nutro:
Consumer complaints about Nutro Pet Foods
It is thought that dogs are getting very sick and even dying from this food and the company won't recall it.