Choose GameObjects by list of tags for OnClick() Event

[BR14Nx]

I would like to have a script, similar to the ButtonConfigHelper, where I can choose the GameObjects for the OnClick()-list by selecting them from a list (e.g. by a list of Tags).

The reason is that I cannot drag a GameObject from another Scene into a prefab with the ButtonConfigHelper, but I could use predefined tags. So for example I defined a list of GO-classes and their associated tags in the script. I choose a tag in the list in the inspector and the associated components and methods are shown which I can select (like in the ButtonConfigHelper). When the game is running and OnClick() Event is fired the script just chooses the (e.g.) first GO it can find with the tag (FindGameObjectsWithTag()) and runs the selected method.

Otherwise I have to implement a single script for every GameObject, just to look up a GO by its tag and run a method. That creates so many small scripts.