Gate.io .... When you make deposit, they don't ask questions, BUT when you want to withdraw they ask KYC with your passport, ID, shoes number, blood type, fingerprint and urine sample.
I have no intention to give all my data and passport scan to some random Chinese for crypto worth of 30-40 USD.
For this reason, I do not use exchanges with registration, as they can always surprise me with a KYC. I use exchangers without registration, ChangeNOW, for example, but everyone has their own favorite exchanger. Also, I use Binance, which I trust.