Hello SurlyVagrant,
There are a few ways you can keep track of these Actor/Objects using “tags” or gameplay tags. Through the editor, we can filter this category. Here is an example on one of the engines pre-made level components.
by clicking the + button, you can add additional tags to the array. Alternatively, if you wanted to customize your own Gameplay tags within c++, There is some documentation that goes into robust details of the GameplayTags classes, and their implementations. I’m going to include two links to further documentation, I hope you find it useful!
Link to the :[Overview of GameplayTags][2]
Link to the: [.api unreal documentation on the GameplayTag classes][3]