Coinbase is probably the most American of all the "American" cryptocurrency exchanges. It's also a publicly traded company on NASDAQ. Not sure where you get the picture that they refuse to tell anyone where the HQ is, it's famously a remote-first company but used to have their HQ in SF.

blockfi was based in jersey city also, it just wasnt public.

They're not "refusing to tell", they simply don't have one. It used to be in San Francisco but in May 2020 they switched to remote-first.

And they're incorporated in Delaware. Last I checked, Delaware was part of North America.

I have to ask out of curiosity... where on earth are you getting your information?

Are you thinking of Binance?