We have been using CA Gen 8.5 under Windows 7 and Windows 10, but VS2010 still. We had many of the controls you listed but over the years have been trying to eliminate them or migrate to something supported. They probably will continue to work, but it is not good to be on unsupported software.
We used these Microsoft Common Controls as replacements for those from Sheridan and Farpoint:
Microsoft Date and Time Picker Control 6.0 (SP6) (mscomct2.ocx)
Microsoft MonthView Control 6.0 (SP6) (mscomct2.ocx)
Microsoft ListView Control 6.0 (SP6) (mscomctl.ocx)
Microsoft TreeView Control 6.0 (SP6) (mscomctl.ocx)
Microsoft ImageList Control 6.0 (SP6) (mscomctl.ocx)
Microsoft Tab Control (ONLY works in CA Gen because we wrote a custom bridge to it)
We still have a couple of windows that use Farpoint Spread 7.0 (still works) but we plan to convert those at some point to either a Microsoft Listview or just eliminate a control on the window.
I am not familiar with Data Dynamics Active Reports. We use CANAM Report Composer for online (GUI client side) reports, but I am not sure if that is an alternative.
Hope this helps!
Becky