Shared GeoTIFF library?

I'm part of a consultant network and one of the products we end up with from our work are aerial GeoTIFFs of client properties. These are private data belonging to the client, but we'd like to be able to share them within our network as case studies which we can all learn from. I'd like this to be a map-based library with links into data sheets.

Originally I thought I could do it by loading the GeoTIFFs into Google Earth Pro but sadly that is only a temporal load now it seems. I have to load each GeoTIFF each time I want to view it. We could possibly use KML data but I've not yet seen what an NDVI map looks like as KML data and I still don't know how this would integrate into either Google Maps or Google Earth to meet our needs.

Has anyone done anything similar? I am fairly non-technical so plain English replies would be appreciated.

Thanks, Tony

It may be best to load them onto Google Drive and have that folder shared to whom ever you wish to share it with, this will also keep it private to just those.