There are dozens of No-KYC casinos, but almost all of them are under rated unknown casinos. I don't remember seeing any big casinos that do not ask for KYC. Duckdice is a big one, not sure if they ask for KYC.
Those are usually decentralized gambling sites with low liquidities which is why they don't really enforce KYC though there have been cases where they abused it such as Dexsport.io which is mired in controversies.
Also, Duckdice is a shady site based on what I know about it which is why I have always avoided it and don't really know much about their KYC policies.