How can I store a series of text?

Thank you, Newest.
I thought data tables are read-only, as in the user cannot edit them in run time and only get data from them once already created. I would like the user to, for example, be able to add names to a list and to be able to do so an unlimited number of times. Would the user be able to add extra rows in-game using a data table?
With arrays, I noticed that they were dynamic where the user is able to add extra names to a string array in-game.