Just in case someone else needs to see this…
I was today years old when I realized I could just duplicate an object and change the copy to an object list using the toggle:
I won’t spend too much time thinking about hours lost doing that manually until now…but I do feel like I need to run laps or do pushups or some other kind of penance 
Great approach, thanks for sharing.
Since I avoid the variables window, I used the trigger action arrays>push to array > Variable (select the object) > to: new variable
And there you create the variable.
Often, I wanted to do this anyways at some trigger. otherwise I delete the action afterwards…
You approach is cleaner if you use the variables window…
That is a good approach too, if you already have the object variable, let the trigger editor do the work to create the list!