macOS: tccd often crashes and locks up the system for a minute; how to diagnose?
I have nothing constructive to add at this point, other than to say I have what looks to be the exact same symptoms.  Same version of MacOS, same one minute hangs (mouse moves, screen frozen, iStat Menu CPU history shows 0% for over a minute), been happening for several months and just found the reportcrashs for tccd.  Mine occur in groups of 1 to 4 several times a week. Crash reports identical to yours.
I have not been able to find any rhyme or reason as to when they occur.
I'll post back here if I figure out anything and will watch to see if you make progress.
Thanks, Dale