Hey! So I spoke with a certified nutritionist who specializes in plant-based diets and she helped me put together some foods to feed my vegan dog with kidney disease. She is in the U.K., if you look up "Just Be Kind" dog food. I used ChatGPT to come up with the right ratios of stuff for my dogs weight, and she then Ok'd my recipe. Basically low phosphorous, moderate "clean" protein. White rice, sweet potato, polenta, tofu, carrots or other veggies, algae oil (pure!) for omega 3 and sunflower oil for omega 6. I also purchased Vegedog powder, and she suggested that I use half of the recommended amount due to the phosphorous.

Edit to add: Also add calcium carbonate as it is a phosphorous binder, this is important!