Best Diet For Kitten

Hi everyone, I have a 9 week old kitten called Jupiter and I want to give her the best diet possible. I’ve seen that Royal Canin is a good brand to have but they don’t seem to have any specific flavours and she doesn’t like anything fish flavoured. She’s currently on Whiskas wet and dry, and I’d like to keep her on a mixed diet, I would just like to swap to the top brand as Whiskas isn’t the best for cats apparently. Any help is appreciated