Software Updater recommends installation of Beta versions of Microsoft Excel 365 and Microsoft OneNote 365 when Current versions are at the most recent build level. The beta version would not seem to be a step forward from the current version from a system security perspective. Other components of Microsoft 365, which are installed on the same computer, are not identified for upgrade.
You should exclude these apps as well as any other Microsoft products as MS update will take care of those for you.