My USB HP 1020 seems to be working too, even if I don't see it in the print queues anymore, it shows up in Device manager under printers only, something is changed, but I don't have an explanation for the difference ?
Edit:
Solved the Print Queues issue by uninstalling and reinstalling the HP drivers. See my next post on this thread.
See difference below for the same printer with 20H2 19042.964 where it shows in Print queues too:
I also confirm that the problem with USB printers has been solved with the 21370, good MS