Is it possible to add default text in Configurable List widget fields?

Is it possible to have a different static text (first column) on each row?

If I understood your requirement correctly, do you wish to add a default text in the configurable list widget fields?

If yes, I'm afraid that currently, Configurable List widget doesn't support default values. If you have a time field in the widget, you can set the current time as a default value. For textarea and dropdown fields, you can show a hint text instead of the default value.