Insert a Design Table and choose the “Auto Create” option. It will automatically add every feature/dimension/etc. that varies across configs. You can delete the design table afterward if you don’t want to keep it.
If you select all the wanted features on the feature tree (hold CTRL) > RMB > Configure feature you get a table where you can see where each feature is suppressed or be able to suppress/unsuppress feature on each configuration. That table work like an excel spreadsheet (copy/paste, fill by dragging the little square spot)