Please include Source List under the Lists category in Reports.
I am a brand new RM user coming over from FTM. One of the early things I did was to review available reports, so I could compare them to FTM.
Sourcing is extremely important to me. I was surprised not to find a Source List under Lists. Fortunately, I stumbled across it under All Reports. If List is part of the title, it seems reasonable that the report would appear under Lists. I've heard people say RM doesn't have a Source report. This is clearly not true. It just isn't where a new user would expect to find it.
I know where to find it now, but others may not be so lucky as to stumble upon it.