"Best"? Is there anything like that?

Been centralized means they are in control of your private keys and to do that, they need your information. It's either an exchange is asking you KYC information before you can use their service or they don't ask you at all, Binance service is not different from that of Kucoin, not dffierent from that of Bybit neither it's unique than that of OKX. The only difference is their branding, marketing and the charges they give on their service. All of them as you for KYC information as long as they a re centralized.

You can't have any exchange that is effective as Binance without any KYC information unless you are buying from another exchange that may want to sell to your through debit card but that's another KYC in my opinion because it's enough to track you down any where you are buying the Bitcoin.