I discovered a couple of resources online that can help, including CatInfo.org's food chart and Tanya's FelineCRF.org food lists. However, although quite handy and excellent, I found these lists were not particularly up to date, and a lot of the foods cited as very low phosphorous on Those people lists https://judahaprpi.shivawiki.com/7424387/an_unbiased_view_of_pet_hotels_dubai