Can I transfer data tables and related layouts from a template app I bought to another existing app? If not, what is the shortest path to this?
If those are Glide Tables in the same team with the existing app, I guess you can connect it to the existing app? If I recall right, you will have to re-do all the computed columns though.
No short path to the layout, you might try copying those over, but not all settings may be brought along.