List of only subpages?

This Lister stack is the only stack I’ve found that makes a list by “grabbing” the navigation links. Is there a way to list only a set of subpages?

For example, there would be a list of all the subpages under 2019, 2018, etc. Or do I have to make a regular list and link every page one at a time? Or is there another stack that can do this?