Hamilton County TN and Williamson County TN use Dominion machines. https://sos-tn-gov-files.tnsosfiles.com/forms/Voting%20Systems%20by%20County.pdf
Not sure exactly what system of Dominion were used in the disputed states.
Hamilton County is ME! Carp - we use a machine of sorts, but the ballot is manually-entered paper. The voter scans the paper in a machine that also passes the ballot into a large bin below the scanner. So it’s not a voting machine in that sense, but a tabulator.
Now, there is the possibility that it is capable of fraud. I mean, Chattanooga did put a democrat in the mayor’s office.