If it’s not possible to get the current view/sheet export list from the file exporting/exported hooks, is there a way to pull the views/sheets from the currently selected viewSheetSet? Or using the InSessionViewSheetSet? I’m having trouble accessing these document parameters.
Looks like that info is available for document printing event, but not document exporting event.
Printing: ApiDocs.co · Revit · GetPrintedViewElementIds Method
Exporting: ApiDocs.co · Revit · FileExportedEventArgs Properties
See if you can find an existing Idea for adding this functionality, if there does not appear to be one request it.
Revit Ideas - Autodesk Community
You could use the “Path” provided in the export args and gather all files of the given export type. But it could grab false positives if there were pre-existing exports in that folder.