Page Builder by SiteOrigin can copy and paste widgets.
To copy a widget, open any page or post that uses Page Builder and right-click the widget. Under Widget Actions, choose Copy Widget. To paste it, right-click a column on the same page or on another Page Builder page. Under Column Actions, choose Paste Widget. The pasted widget keeps the copied widget’s settings.
If you use Page Builder by SiteOrigin and haven’t tried copy and paste yet, give it a go.