https://www.chewy.com/newmans-own-organics-advanced/dp/44980
Newmans Own Organics is a decent food, not sure if it will meet the criteria you are looking for, check it out and then contact your vet with the numbers.
I had a dog with kidney damage and I went strictly by what the veterinarian that was treating her recommended, prescription food, along with a variety of other treatments I was able to keep her comfortable for a couple of years.
I wouldn’t dream of letting the other dogs eat her food. I find dogs tend to fight over food (food aggression) so, I feed separately, 2 feedings per day and monitor at mealtime.
I won’t leave empty dishes down, as I have seen fights break out over that.
Another experience I had years ago due to leaving food down all day, MICE, yes, they chewed through a kitchen wall to get to it!
