I found a number of assets online to aid, including CatInfo.org's food chart and Tanya's FelineCRF.org food lists. On the other hand, whilst pretty valuable and fantastic, I discovered these lists were not particularly updated, and some of the foods cited as lower phosphorous on These lists weren't beneath 0. https://donovancmwgp.blogzet.com/how-pet-store-can-save-you-time-stress-and-money-50348181