ArcGIS Pro 3.4.2; file geodatabase
It would be handy if we could right-click a symbology class in the Contents layer and choose an option that would select those features (the features would be selected in the attribute table/map).

Use case: Easily select features without creating an expression (definition query or Select By Attributes) for the purpose of quickly using the selected features in geoprocessing tools.
Alternatively, honor multiple symbology toggles by right-clicking the root layer and choosing an option to select all the features that are toggled.

Implemented idea: Toggle visibility for individual Categories on Symbology tab