why no reply?
Nobody use crypto exchanges?
This information is available everywhere. Rankings of centralized crypto exchanges can be found all over the internet. Or do you want to hear users here mention a specific exchange you admire or promote?
Anyway, those that you mentioned are widely recognized only in a certain field of the crypto exchange market. In other crypto exchange markets, say, instant swap market or non-KYC exchanges, their names may not appear. There are also others who prefer to make exchanges in decentralized markets. None of the above-mentioned exchanges is a choice.
I guess he know those things but just trying to get the idea of people to get some info about what better exchange to use aside from what he know.
But actually he can directly go here
https://coinmarketcap.com/rankings/exchanges/ to know what is the top exchange operating in this space.
Also maybe there's local exchange running in their country and I think that is more convenient to use especially if he is the type of crypto user which regularly cash out his earnings.