just for reference, there’s been an effort before to create Wikipedia pages for plants that had a lot of observations: https://forum.inaturalist.org/t/the-most-inatted-plants-without-wikipedia-articles/8747.
this doesn’t have have to be a game where one person makes a guess and another person tries to make a better guess. it should be possible to get the most observed species in iNaturalist and then just run them through a SPARQL query to figure out whether a Wikipedia page exists, in whichever language you’re looking for. here are some example queries that should point you in the right direction: https://forum.inaturalist.org/t/use-wikidata-for-place-names-and-wikipedia-descriptions/7702/31.