This task to find the number of occurrences concerning various maintenance tasks and suggestions on the wikis we target.
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I've tried to find categories on the different wikis where articles needing cleanup were listed. It is really rare. It is probable that I may have missed some since categories are not that much linked to Wikidata.
A template like [[ https://www.wikidata.org/wiki/Q5877521 | Globalize ]] can lead to multiple options:
* the template don't categorize the articles (case of Arabic Wikipedia, where there is [[ https://ar.wikipedia.org/wiki/%D9%82%D8%A7%D9%84%D8%A8:%D8%AA%D8%B9%D9%85%D9%8A%D9%85 | just a template ]])
* the template categorizes the articles in a monthly category ([[ https://en.wikipedia.org/wiki/Category:Articles_with_limited_geographic_scope | English Wikipedia ]])
* the template categorizes the articles in a global category ([[ https://fr.wikipedia.org/wiki/Cat%C3%A9gorie:Article_%C3%A0_internationaliser | French Wikipedia ]])
You can find multiple template categorizing in the same category. Sometimes, the template and the category are not linked. For instance on Arabic Wikipedia about adding coordinates to articles : [[ https://ar.wikipedia.org/wiki/%D9%82%D8%A7%D9%84%D8%A8:Coord_missing | template ]], [[ https://ar.wikipedia.org/wiki/%D8%AA%D8%B5%D9%86%D9%8A%D9%81:%D8%A7%D9%84%D9%85%D9%82%D8%A7%D9%84%D8%A7%D8%AA_%D8%A7%D9%84%D8%AA%D9%8A_%D8%AA%D9%84%D8%B2%D9%85%D9%87%D8%A7_%D8%A5%D8%AD%D8%AF%D8%A7%D8%AB%D9%8A%D8%A7%D8%AA | category ]].
Some wikis have a combination of a full list and a monthly curated list (Orphan articles on fr.wp: [[ https://fr.wikipedia.org/wiki/Cat%C3%A9gorie:Article_orphelin | monthly list ]] & [[ https://fr.wikipedia.org/wiki/Cat%C3%A9gorie:Article_orphelin/Liste_compl%C3%A8te | full list ]]).
We can find more data about those templates if a maintenance category is created. I can't do it, because it is about editing; we need to work with the communities about it.
==== Samples
Concerning categories, Arabic Wikipedia clearly has a plus compared to other wikis. But there is not that much maintenance categories.
| | ar | cs | ko | vi |
| Articles lacking sources | [[ https://ar.wikipedia.org/wiki/%D8%AA%D8%B5%D9%86%D9%8A%D9%81:%D8%AC%D9%85%D9%8A%D8%B9_%D8%A7%D9%84%D9%85%D9%82%D8%A7%D9%84%D8%A7%D8%AA_%D8%A8%D8%AF%D9%88%D9%86_%D9%85%D8%B5%D8%AF%D8%B1 | 113,141 ]] | - | [[https://ko.wikipedia.org/wiki/%EB%B6%84%EB%A5%98:%EC%B6%9C%EC%B2%98%EA%B0%80_%ED%95%84%EC%9A%94%ED%95%9C_%EB%AA%A8%EB%93%A0_%EA%B8%80|14,102]] | - |
| Article needing coordinates | [[https://ar.wikipedia.org/wiki/%D8%AA%D8%B5%D9%86%D9%8A%D9%81:%D8%A7%D9%84%D9%85%D9%82%D8%A7%D9%84%D8%A7%D8%AA_%D8%A7%D9%84%D8%AA%D9%8A_%D8%AA%D9%84%D8%B2%D9%85%D9%87%D8%A7_%D8%A5%D8%AD%D8%AF%D8%A7%D8%AB%D9%8A%D8%A7%D8%AA|686]] | - | - | - |
| Uncategorized pages | [[https://ar.wikipedia.org/wiki/%D8%AA%D8%B5%D9%86%D9%8A%D9%81:%D8%AC%D9%85%D9%8A%D8%B9_%D8%A7%D9%84%D9%85%D9%82%D8%A7%D9%84%D8%A7%D8%AA_%D8%BA%D9%8A%D8%B1_%D8%A7%D9%84%D9%85%D8%B5%D9%86%D9%81%D8%A9|478]] | - | - | -
| Illustrate | [[https://ar.wikipedia.org/wiki/%D8%AA%D8%B5%D9%86%D9%8A%D9%81:%D8%B5%D9%88%D8%B1_%D9%85%D8%B7%D9%84%D9%88%D8%A8%D8%A9|3]] | - | - | - |
If we rely on the number of inclusions of the templates (using [[https://tools.wmflabs.org/templatecount|Template count]]), we can have more possibilities:
| | ar | cs | ko | vi |
| Copy edit | [[https://tools.wmflabs.org/templatecount/index.php?lang=ar&namespace=10&name=تدقيق لغوي |484]] | [[https://tools.wmflabs.org/templatecount/index.php?lang=cs&namespace=10&name=Pravopis|372]] | - | [[https://tools.wmflabs.org/templatecount/index.php?lang=vi&namespace=10&name=Chính tả|4,733]] |
| Image requested | [[https://tools.wmflabs.org/templatecount/index.php?lang=ar&namespace=10&name=طلب صورة|10]] | [[https://tools.wmflabs.org/templatecount/index.php?lang=cs&namespace=10&name=Požadavek na obrázek|833]] | [[https://tools.wmflabs.org/templatecount/index.php?lang=ko&namespace=10&name=사진 필요|42]] | [[https://tools.wmflabs.org/templatecount/index.php?lang=vi&namespace=10&name=Hình ảnh|26]] |
| Unreferenced | [[https://tools.wmflabs.org/templatecount/index.php?lang=ar&namespace=10&name=مصدر|113,225]] | [[https://tools.wmflabs.org/templatecount/index.php?lang=cs&namespace=10&name=Neověřeno|8,552]] | [[https://tools.wmflabs.org/templatecount/index.php?lang=ko&namespace=10&name=출처 필요|13,397]] | [[https://tools.wmflabs.org/templatecount/index.php?lang=vi&namespace=10&name=Thiếu nguồn gốc|4,379]] |
| Lead revrite | [[https://tools.wmflabs.org/templatecount/index.php?lang=ar&namespace=10&name=إعادة كتابة مقدمة|17]] | - | [[https://tools.wmflabs.org/templatecount/index.php?lang=ko&namespace=10&name=도입부 정리 필요|0]] | - |
| Wikify | [[https://tools.wmflabs.org/templatecount/index.php?lang=ar&namespace=10&name=وصلات قليلةر|0]] | [[https://tools.wmflabs.org/templatecount/index.php?lang=cs&namespace=10&name=Wikifikovat|28]] | -| [[https://tools.wmflabs.org/templatecount/index.php?lang=vi&namespace=10&name=Wiki hóa|1,876]] |
| Review translation | [[https://tools.wmflabs.org/templatecount/index.php?lang=ar&namespace=10&name=ترجمة آلية|615]] |-| [[https://tools.wmflabs.org/templatecount/index.php?lang=ko&namespace=10&name=기계 번역|104]] | [[https://tools.wmflabs.org/templatecount/index.php?lang=vi&namespace=10&name=Chất lượng dịch|1,209]] |
| Article needing coordinates | [[https://tools.wmflabs.org/templatecount/index.php?lang=ar&namespace=10&name=Coord missing|0]] |-| - | [[https://tools.wmflabs.org/templatecount/index.php?lang=vi&namespace=10&name=Coord missing|713]] |
| Orphan page | [[https://tools.wmflabs.org/templatecount/index.php?lang=ar&namespace=10&name=يتيمة|375,083]] | - | [[https://tools.wmflabs.org/templatecount/index.php?lang=ko&namespace=10&name=외톨이|4]] | [[https://tools.wmflabs.org/templatecount/index.php?lang=vi&namespace=10&name=Mồ côi|21,632]] |