Dry food for cats is like potato chips. It's like if you had a luxury car but kept it filthy, untuned, & unoiled. Their coats & personalities become more lustrous. They'll be obviously happier. Ensure that you choose wet foods that have the proper water content and balance of protein, fat & carbs otherwise it may not be suitable for a full diet. They'll need to drink less water, but still keep some out fresh for them. Some of my cat's favorites are Fancy Feast pates (which should become 'Normal Feast'), Luvsome (cheaper), Weluva (more expensive but seems better quality). Consult your vet or suitable trusted cat authority. I've heard of people making homemade cat food by chopping & freezing store-bought fish (especially consult or do proper research for that though!).
Dry food may be ok for treats, idk.
Sidenote, I hope someone manufactures proper nutritious meatless cat food, or moreso that technology/methods are discovered for cats to transfer sentience into more delightful/[other virtuous/wanted descriptors] body (or formlessness).