I'm feeding my three cats with a mix of dry food (Whiskas Lamb) in one bowl and wet food, which changes every day in the week (Mine prefer wild, beef, chicken/turkey, salmon, trout).
But now the bad news: you must test, which food he likes. I went to every drug store, supermarket and looked after the house brand, which has no sugar, dyes, artificial flavors, preservatives (lol, sorry in german this has a second meaning).
Personally i like wet food in form of pate, as cats are tending only to lick up the sauce otherwise.
My cats are not fans of the mega common cat brands, but perhaps yours. So you should test, test, test.
You can't buy this in US, but my preferred chain of drug stores in Germany has its own brand
I guess this must similar in the US, every bigger chain of supermarket has it owns pet brands, as people are buying willingly things for their pet.