I've never even heard of FTX and I've been in the crypto space for many years. Binance however was always near the top since it came out. There was one american exchange that used to be nr.1 but became irrelevant after they weren't allowed to serve non-americans anymore. I can't remember the name and it isn't in the top 300 anymore, maybe they had to shut down.
EDIT: I just checked and FTX was only founded 3 years ago