There’s already a request with a pretty good amount of support for taxonomic sorting in Explore – that would give you a taxonomic list of species seen in a place. (Here and here, among others.)
And the checklist bouteloua mentioned is already able to be sorted taxonomically:
Edit: and there’s the observations/taxa page, though I’m actually not 100% sure how that information is collected or why it doesn’t match Explore or the checklist page.
https://www.inaturalist.org/observations/taxa?place_id=18&taxon_id=85493