Kucoin and FTX have good features you can use both exchanges according to your requirements, Kucoin has supported almost all pairs and deposit withdrawals for many chains and trade without KCY and fast withdrawal as compared to FTX have required KYC for withdrawals and low fees for ETH and some networks no fees but not supported many networks.
Kucoin is not an exchange that requires KYC? I honestly have never used Kucoin but I am actively using FTX, and currently FTX has accepted many chain when withdrawing or depositing such as solana, tron, and erc.
I have a bad experience with Kuchoin, I have an account from 2018 and then the end of 2018 never logged in until the end of 2021 or about 3 years, still leaving several altcoins such as Monaco Card, Eth, and several Altcoins, when I check it now around $ 450, But when I was going to log in at the end of 2021 they block and ask for KYC, I complete KYC after successful and I can login it turns out zero balance, no history of deposit and withdrawal and the deposit address changes and the balance in the old wallet is moved.