I think a version which is using named groups (that’s the way Rhino computed identified elements too as I learned today) would be more robust.
Unfortunately I haven’t found a way to find out which Grasshopper groups a component is part of yet.
I checked the forum for solutions (Is there a way to accesss groups-information in an object? this one is talking about Rhino groups, not about GH groups), but coudn’t find anything on it.
Thanks again!