Just rung Hills and RCW to ask about how many calories/phosphorus are in their renal foods and a couple of other foods. Thought I'd post in case it helps anyone else who is struggling to feed a little one.
Renal: Hills k/d can 120 cals
RCW chicken pouch: 138 cals (tuna slightly less): both are in the 0.35% phosphorus range.
Hills a/d - forgot to write the no down but 1g phosphorus and slightly higher in calories than k/d.
Senior turkey pate (Science Diet): 87 cals per 85g can and 0.6% phosphorus.