SpamSieve Not Appearing in "Manage Plug-Ins" List

Michael - for some reason SpamSieve is not appearing on the list of installed plugins for Mail. I tried to uninstall the plugin for Apple Mail and re-installed it but SpamSieve is not appearing.

I’m running Mail 16.0 (3696.120.41.1.1) on Mac mini (M1, 2020) with macOS 12.5 and SpamSieve 2.9.50b1

Please see If the Apple Mail Plug-In Doesn’t Appear in the List or Doesn’t Stay Enabled.