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Passwords have problems, but passkeys have more
(world.hey.com)
This is a most excellent place for technology news and articles.
Yeah it's truly a shame almost no site other than google and github support hardware security keys.
For your case you would probably want a yubikey 5c and then a usb c to usb a adapter yeah. I wish for a usb a and c and nfc as well.
I've got one each of the USB-C and USB-A versions. The USB-A is actually the one that lives on my keychain as the connector is more robust against debris and I was able to find an adapter that is on a lanyard.