I found a few means online to help you, which include CatInfo.org's food chart and Tanya's FelineCRF.org food lists. On the other hand, although very handy and great, I discovered these lists were not exactly current, and a lot of the foods cited as very low phosphorous on Individuals lists https://pet-shop-dubai36802.bligblogging.com/36198661/pet-fundamentals-explained