I favour a predominantly wet diet, and whether wet or dry I favour a high meat content, minimum grains and no nasty artificial colourings etc. Provided your cat will eat them, of course.
As to brands - for dry food I prefer Orijen and Applaws as they are grain free. When I'm not feeding Orijen, I usually feed hi life dry or james wellbeloved dry. At the moment I'm feeding joe and jills dry as it was on offer recently in tesco so I stocked up with a few bags. PAH premiuim dry is pretty good too, and regularly on BOGOF or similar. Generally, the more premium brands sold in pet shops are better quality than supermarket brands. So Hills, Royal Canin, JWB etc have a higher meat content and better ingredients in general than go cat, whiskas etc. I wouldnt say RC was wonderful - it's in that group of good foods but not necessarily any better than the likes of PAH own brand. I think it was RC that wouldnt give the meat content of their dry foods - I think someone on here tried to find out and RC wouldn't tell. I bought some RC Pure Feline recently and it had a meat percentage on the back so maybe they've decided to be more open, or maybe it was just that particular food. Iirc, it was slightly lower than some other comparable foods. I do think RC have links to vets because of their prescription foods, and many vets will recommend it, as they recommend Hills. I do think it's a good food, but not perhaps as fantastic as some vets will have you believe.
For wet - foods with a high meat content and which are complete inc hi life essentials, PAH Purely, Tesco luxury, Tesco Finest, bozita, animonda.. complementary foods with high meat content include applaws and almo nature, some hi life pouches and tins.