You can do it yourself
https://forum.inaturalist.org/t/using-sql-to-query-inats-dwca-taxonomy-export/29377/18
or find the answer on the forum.
https://forum.inaturalist.org/t/finding-out-common-names-numbers-per-language/17902
but there is a better and more recent topic about this subject:
https://forum.inaturalist.org/t/the-state-of-common-names/39118/25
Feature request YIR:
Add a list of languages which had added more then 1000 common names to the YEAR IN REVIEW
-the total number of common names for this language
-the total number of common names added in Year X.