I am only trying to note what the Family Tree Maker program calls stuff for others, who may follow us, understand whet screen or information on the screen we are talking about.
I think that Genealogy Report is the appropriate Collection Title for the various Register Reports that you mentioned. By the way, those reports are New to Version 2011. We had, in Version 2010, four 'reports', two ancestor and two descendant reports. The other numbering systems were not available before.
If you wish, you can always provide your Feedback to the developers on the Feedback website.