User blog comment:DaNASCAT/Template Types: A Smarter Categorization System/@comment-24930713-20151125100824/@comment-24473195-20151126004921

"What would be far more useful IMO would be for some kind of central wiki or repository to be built where people could link a template that has already been created rather than every wiki creating an Infobox person, String left or Cite book. I would find that extremely useful and I bet others would too."

We do have such a wiki. It is unfortunately not known because it was not well publicised and most people lack the technical skills to design such "special" templates. The wiki repository that contains these "global templates" is dev.wikia. They exist in the form of Lua modules that can be imported and used in any wikia. Much like how Javascript gadgets can be imported. Unfortunately, portable infoboxes don't work well with lua.

Still, I do agree  that we definitely need a batch functionality for template classification. If an API existed, a script could be designed  to  quickly, painlessly and effortlessly classify dozens of templates within a category with a single click!