Seems the widget libraries are now (dp11) of type “module” which meant they were overlooked when looking for associated properties, functions etc.
This has now been corrected as of version 2.5
Version 2.5
• Adjust internal cross ref to account for change of widget libray type to "module"
Version 2.4
• Fixed keyword index for database
(Control structures now appear under the key phrase "Control Structures".)
The user contributed docset for LiveCode is now at version 1.4.2 and has these corrections.
Within Dash it now appears that all item types are correctly identified and listed. They even all have icons now

Can’t speak for other readers.