PNP script for all users with Full Control within a Site collection's sub-sites

We are looking to export all users that are of Full Control permission level in an on-premise site collection.  This site collection could have 300+ sub-sites.

We are trying to figure out a way to export that information with all users that have Full Control in these 300+ sub-sites and use the export in Excel to then look at grouping options per users.

This whole experience is to begin site auditing, and for someone associated to multiple sub-sites with Full Control, we'd like to meet with them and address multiple sites in one setting if possible...rather than schedule multiple meetings.