Stationery Pad ~ how to *list* all such files previously so marked?

[MacProRumours]

View attachment 2353453
In the Finder (Info) I've checked a large number of files to be Stationery Pads (template-type files).

Stationery Pad files, that I'd now like to consider together in a single Finder Window.

Under the pop-up menu Kind, "Other" is listed at the bottom. One of these (as in above image) is "Stationery" (N.B. not Stationery Pad).

Using this attribute, "Stationery" produces lots of results but on subsequent review, appear to be a random mix of Stationery Pad file files and files not checked as Stationery Pad files.

If this search does not work properly, then perhaps there is a known Terminal command (?!)

I wonder if anyone knows how to search for this criterion only and list them in the Finder?

I'm using Mojave (10.14.6)

 

[MacProRumours]

Stationery Pad status

Alternatively, how to batch-change a large number of files from unchecked, to checked?

Does anyone use Stationery Pad a search criterion? If offers a pop-up menu with options of: "Any", "Yes" and "No". If it worked then it would be a complete answer. But it appears not to work …