Hi Basil Peter,
Unfortunately we do not have an exhaustive with mapping between the different controls.
Sometimes certain features may not be available for either platform because the capabilities SL and WPF offer are different.
Also, some controls are not released simultaneously for SL / WPF. For example the RadDocking for SL will be available officially for WPF with the coming Q3 release.
Generally base control parts like the HierarchicalDataTemplate are in a different namespace because they are built-in in WPF but for Silverlight we have implemented our version that matches them because they are not found in Silverlight.
We will be happy to help you with guidance on converting something, but we do not have a complete list with items on how this can be achieved.
the Telerik team