e.g., order the results of this URL query by genus, then species:
see https://forum.inaturalist.org/t/sort-observations-alphabetically-by-species-and-place/5011/12 and the original post in that thread
here’s something else that provide another possible e workflow that might get you where you need to go: https://jumear.github.io/stirfry/iNat_observations_taxonomy?project_id=kansas-herpetofaunal-atlas-inat&without_ident_user_id=twtaggart. this summarizes the number of observations in your set in a taxonomic tree. from there, you can click to see the observations at any taxon node, and that second page has links to the Identify and Explore pages. it’s a few clicks to get to where you want to go probably, but it might help you get things in the right groupings.