this was a secondary discussion item over at https://forum.inaturalist.org/t/simplified-species-list/25967.
can you share (at least a sample) what your final result is? i’m curious about the different reasons why folks care about “taxonomic sequence”. with species, you would already have species and genus. would you then want to group by family? or are you just going with more of the “iconic taxon” groupings (birds, plants, insects, etc.)? or you really organizing according to the whole taxonomy (in which case, are you just sorting by scientific name at each given rank or doing some other taxonomic ordering)?
UPDATE: there’s also https://kildor.name/inat/species, which can give you the a species list in CSV format. it’s not in taxonomic order, but you could just take the CSV and sort as you like. this and other tools made by @kildor are described here: https://forum.inaturalist.org/t/several-external-tools-for-inat-data-by-kildor/19906.