I think it might be useful to have predefined lists of titles and values to be entered into Select controls. It might be handy when you do not want to use separate table in database but you want to use the same list application-wide.
Regarding your idea about predefined lists of titles and values: yes, this can be solved cleanly with a JSON dataset.
A small JSON file gives you a single, central source of truth for reusable lists across your whole Wappler project. No database, no repeated options, no maintenance headaches. Wappler reads JSON beautifully, and you can bind those lists directly into any <select> using App Connect.