Since we're discussing food so much (or maybe it's mostly me - tearing my hair out), are people here family with Binky's cat food tables? Janet -and other volunteers- have created and maintain these tables of both canned & dry cat food nutrition info. They don't tell you what is in the food, but they do tell you what the calorie count is, the percentage from protein, fat, carbs... all the stuff that is actually useful but the food companies don't make easy to find out (and some apparently do their best to block the info!). Having a 'guarranteed analysis' apparently doesn't mean all that much, kinda like our required daily dose of vitamins. So.. these may be of some help.
canned food dry food
and Dr Lisa's
cat info page
now I have some figuring to do to work out how much my cats should be eating of which foods! we'll see how it tallies with what I've been feeding them, and how they've gained weight.