I have Binance, OKX, Huobi Global and Kucoin account. KYC is mandaion Binance as we all know. I was unable to access Huobi derivative trading until I submitted KYC, OKX forced me to provide a mobile number when I wanted to withdraw, but that is still cool because that can still be done in a way it will not link to my real identity. I do not know much yet about Kucoin because I opened it two weeks ago, maybe the exchange will still make something pertaining to KYC mandatory or not, only email and password is required to sign up just like login in, it is the most recognized among those no cemtro KYC exchanges.