Where to find out what CDS is used as a source for a standard report

Dear colleagues,

One of my customer wishes to implement SAC reports on S4HC, for this they are wondering where to find out what CDS is used as a source for a standard report.

Is there any in app functionality, or any documentation showing used CDS views for standard reports?

Any blog exploring these CDS used a sources for std reports?

Regards,

Axel