It is possible on repeating table info, to write an Excel Power Query, store the Excel on the same site as IP library, and then expand the merged data into individual rows. I have done this in SPO with just Excel Power Query.
i cannot provide a screenshot as it is on a secured server however. Below are the steps of my Query, the added custom, and expand steps are for the merged data fields to split them into individual rows. After expanded to individual rows, you remove the merged columns, then rename your expanded columns to be the new column names of the merged fields.

