In this tutorial, we show you how to import spreadsheets into Unreal Engine and easily access and display that data using an Event Dispatcher. Spreadsheets are better for two reasons. One: It is much easier to actually manage and input text data on a spreadsheet; and Two: it is very easy to loop through the rows to access and display that data.
https://dev.epicgames.com/community/learning/tutorials/eGoV/why-spreadsheets-are-better-than-arrays-for-importing-and-accessing-text-data-in-unreal-engine