If you have multiple mods/workshop addons that include new objects, trees, materials, etc, it can sometimes be really overwhelming and confusing to find certain objects, even if you know where they come from. An example would be if you wanted to find a road object from a certain mod, you have to type “road” and then sift through all the different vanilla and modded roads until you find the one you want.
I suggest that the current object filter be expanded to also filter based off a selected mod or addon.
Example
Source [ Search Bar / Drop Down of Mods ]
You would either type in the name or ID of the mod, or select it from a drop down menu that lists all downloaded content as well as Vanilla Built-In
That way if you want to just look for Vanilla stuff, you can filter just Vanilla, or Modded. This combined with the normal object name search would make pin pointing what you are looking for much easier.