V23.02.01
I can't get any of the included default KDE Plasma monitoring widgets or others available for download to display anything since there are no sensors available to select despite lm-sensors being installed and configured. The following therefore might help other users.
Some older versions of Conky will function by displaying the data but not any rings if part of the config.
More efficiently the Flatpaks available for 'Monitorets', 'System Monitoring Center' and 'Mini System Monitor' all function as expected.