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Unfortunately there is no such widget that can dynamically add columns on the form.
Most of the widgets only add Rows. It is because fields in the form will appear as column in the form's submission data view - which cannot be modified/customized.
If you want to have another column in the submission, you will need to add a field on the form.
The closest alternative I can suggest is using the Configurable List Widget.
The configurable ist widget have a lot of customization options that will allow high customization of the form.
user guide: -How-to-Set-Up-the-Configurable-List-Widget
Let us know if there is more we can assist you with.