TextColumn displaying custom output

So in this project of mine, I want to store 3-5 user ids (foreign key) into an array and then possibly list the names attach to these ids into one column. In the filament demo page under the posts tab, there is a column of commented authors which lists several names but I know that is connected to another table in of it self. Is it possible to do it a simpler way or do I have to do what the demo did?
Commented-Authors.PNG
Commented-Authors1.PNG
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