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.
that's why I prefer instant services - they didn't store your funds and it's quite easy to avoid kyc. On changenow f.e. you can exchange near 10 btc per order without kyc. but I'm always doing smaller orders, near 1-2 per transaction