Need help building a list

Hi folks.

I am trying to create a scrollable selection screen using a Data Viewer List.

I have 78 guitar chords for users to choose from (in three categories, so there will be 3 scrolling lists). The goal is to enable users to create a custom list of chords to be shuffled, and being able to select chords from the 3 lists to be combined into that custom list.

I have the shuffle screen built out, I need help creating this list. Any pointers? Is this doable?