It would be helpful if user can add Excel Sheet (xlsx) data into map not only by Add Data but also with drag into map as usual in ArcMap. When dragged into map, an error appears:
Failed to add data, unsupported data type. U:\test.xlsx DBMS table not found [no such table: test.sqlite_master] [test.xlsx] DBMS table not found [no such table: test.sqlite_master] [test.xlsx].
This behaviour has been tested on ArcGIS Pro 3.2.1