How to Display All Data Sources in Use?

My team and I have created a massive PBIX report with dozens of connected data sources, 40-50 unique data sources. Only about half of which are in use in the report visuals and the rest need to be removed for report performance. We need to isolate the data sources that are not in use in any visuals but are struggling to find a straightforward method of determining which data sources are unused.

Does anyone know how to see a list of data source uses or vice versa in order to determine which data sources do not have a use in the report?