Where can you shop from? That can affect what's available to you. If you're not from the US or UK, it's harder to offer suggestions.
Look for a meat first pet food, preferably one that doesn't have corn or a grain as one of the first 3 ingredients.
It's up to you, but you can opt for many of the grain free choices or just regular cat food. Part is of course what you can spend.
Here's some ideas off Amazon since you mentioned them.