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.
**!! ====NOTE: Final copy updated below:==== !!**
* Other Wikipedias
** If found in one other Wikipedia...
*** {icon check-square color=green} Text: `Used in the same article in $Lang1.`
** If found in two other Wikipedias...
*** {icon check-square color=green} Text: `Used in the same article in 2 other languages: $Lang1 and $Lang2.`
** If found in three other Wikipedias...
*** {icon check-square color=green} Text: `Used in the same article in 3 other languages: $Lang1, $Lang2, and 1 other"
** If found in four or more other Wikipedias...
*** {icon check-square color=green} Text: `Used in the same article in $TotalOther other languages: $Lang1, $Lang2, and $(TotalOther - 2) others"
*** 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: "Image"
* Commons category
** {icon check-square color=green} "One of several images linked to the Wikidata item for this article."