Search function that helps creating MOCs

I want to work on a MOC by using the search function and dragging notes that are relevant into the MOC. However I want only notes that are not already dragged into the MOC to show up. Is there a way to search so that no notes appear that are linked to from a certain note?

I know what you mean by a MOC, but Obsidian has no concept of what a MOC is.

You have a help thread here: Is there a way to search for notes not linked in a certain Note (MOC)? covering the same question. Hopefully folks can add some more suggestions.

Regardless if would be nice to add the feature to drag notes into another notes without the ones that are already there to show up in the search window