I don't recognize these files from previous Fedora versions (On 35 now):
-rw-------. 1 1000 1000 100 Nov 15 21:49 .xauthHhCXrs
-rw-------. 1 1000 1000 100 Nov 14 22:35 .xauthmDNgLB
Both contain at least this string in common:
fedoraMIT-MAGIC-COOKIE
and they also contain some unwritable characters (?)s
I see some people get errors from ssh or xterms containing this string but I'm not using either of those services yet on this build. The files appeared on their own.