How can I reference specific actors from a list of randomly generated actors of a certain class?

I’m using a spawn actor from class function to create tiles to generate a room. In this room I will have objects of a certain class spawn in. I would like to allow my artists to simply place an actor, and have a probability of an item spawning at that actor. I would also like them to be able to place any number of these actors. The current method I am using works when coded for each specific tile, but I would like my artists to simply make the art, put it together in a blueprint, and place the spawn actors into the tile and forget, rather than me coding every time. I want to put the code together in the parent Blueprint instead, so I will have it count the number of these actors, but I don’t know how to reference those actors. This should make a lot more sense when viewing how the code for the individual tiles works. Thanks!