I think, generally speaking, it would be useful to be able to fetch a list based on its contents.

And have some rudimentary information about each list item without having to fetch each item.

My rudimentary solution is to use a k tag on the list which can be a string of kinds of the items in the list. As you said, this could be a lie. (womp womp)

And then to use markers as a rough way to determine what the item is without fetching it.

But, I’m sure there are more-better solutions and I appreciate the discussion.