The content in the image inspector starts with the suggestion reason. It should say one of these three things, depending on the source of the suggestion in the API. It should not have any prefix, i.e. it does not start with "Suggestion reason:" like in the mockups.
* Other Wikipedias
** If found in one other Wikipedia...
*** {icon check-square color=green} Text: "Used in the same article in Czech Wikipedia."
** If found in two other Wikipedias...
*** {icon check-square color=green} Text: "Used in the same article in 2 other languages: Czech and Norwegian."
** If found in three other Wikipedias...
*** {icon check-square color=green} Text: "Used in the same article in 3 other languages: Czech, Norwegian, and 1 other"
** If found in four or more other Wikipedias...
*** {icon check-square color=green} Text: "Used in the same article in X other languages: Czech, Norwegian, and Y others"
*** X is the number of languages in which the image is found. Y = X - 2.
*** Ideally, we want to intelligently choose these two wikis by using language fallbacks or logic from ULS (universal language selector). But if using that logic is too challenging, we can display whichever wikis are returned first by the API.
* Wikidata
** {icon check-square color=green} Text: "Found in the Wikidata item for this article (strong match)."
* Commons category
** {icon check-square color=green} "One of several images linked to the Wikidata item for this article."