My one big complaint with workspace references is, it came way too late. I think it is really only supported in Revit 2021 Dynamo and up. (I may be wrong) but it is definitely not in 2018.
My main suggestion right now would be to make sure you are in 2.0.4 at a minimum for this effort. Then you can use view extensions to find the packages (sorta). Monocle used to have Lookup abilities but it was user-maintained and the list had to be updated periodically by me.
In Revit 2018 I clicked on the dynamo icon on the manage tab and this is what came up. Whats weird is in my add remove programs I see 0.9.1 and 1.3.4. Yet I’m in Revit 2021 currently (yes I’m jumping around, hello friday!) dynamo is version 22.214.171.12450.