Board Thread:New Features/@comment-5558012-20151119135048/@comment-126761-20151120164146

I think that (Template:Demo) could be described as a 'data' template, but it's a good example of one that's not a perfect fit. We're never going to be able to make a perfect list, but we want to try and get close.

We simply aren't very interested in templates that aren't used on content articles, so it doesn't really matter if there's of lot of variation in the 'Non-article' bucket. If they do get used on content articles, you'd classify them based on that usage.