I know there's hidden information called EXIF, but I think this is something else and here is why. Try, for example, searching in Google images "INFO". You will probably find this picture in some of them:
Try to download this picture (or if you can't find it you can download any other). Now, upload this image by drag-n-drop to Google Image Search and you will notice the text "selfie props". What the heck is this?! Where did this info come from? It's not in the EXIF. Or perhaps I'm missing something here?