KYC Casino:
Casino which have mandatory KYC on their TOS, even the gamblers can deposit, play and withdraw without need to complete KYC for many years, but the casino has a right to ask KYC on anytime.
No KYC Casino:
Casino without KYC rule on their TOS, this mean the casino wouldn't ever ask KYC even though you've break many rules on their TOS. Usually No KYC Casino will terminated or closed the fraudster account.
The Predatory KYC casinos I've seen will wait till the user hits a large withdrawal and then force KYC. Some of the shady casinos, now defunct, went down this path and would happily allow users to deposit funds and lose them without ever requesting verification. If the player won, they wouldn't honor the withdrawal.
I generally only categorize casino's legitimacy by allowing anonymous withdrawals. If there is a clear limit that's established before a player deposit before KYC is enforced, I'm okay with that too as long as the player is made aware.