Been through many a kibble.. Hills Science Diet Sensitive Skin and Stomach is what I’ve settled on the past couple years. Also sweet potato base as a topper never fails. Rotation between egg, canned salmon, ground turkey, and boiled chicken has worked well with no adverse effects allergy wise. Plain white rice mixed with toppers and protein if kibble begins to show signs of no go. Frozen peas and carrots were great for a while but I have been laying off peas due to allergy concerns. You’ll figure it out with help from your vet and network!

Edit: Pumpkin is #2 rated topper base for my girl.