So most images in wikis have descriptions, like here: https://i.imgflip.com/93v334.jpg
But you can not only add text to the descriptions, but also tables. To do that, click on Visual editing, then on the image description, then on the plus sign add the top, then on "Table", then reduce the amount of columns to two, and you have a template prototype. it won't be perfect, but it will be something.