you may be able to do some or all of this more efficiently without downloading all your identifications.
if you want to see the most common taxa that you provide IDs for, you could use the API to get this via /v1/identifications/species_counts. for example: https://jumear.github.io/stirfry/iNatAPIv1_identifications_species_counts.html?user_id=lois_rancilhac&own_observation=false.
if you want to see the location of the observations that you are identifying, then you could use some version of iNat’s existing observation mapping capability if you filter the set of observations that you’re interested in by the ident_user_id and not_user_id parameters. for example: https://www.inaturalist.org/observations?ident_user_id=lois_rancilhac¬_user_id=lois_rancilhac&verifiable=any&subview=map. there are other tools to get other kinds of maps, too. (see https://forum.inaturalist.org/t/in-pursuit-of-mappiness-part-1/21864 .)
there are also ways to visualize temporal distributions, too, depending on what you want to use as your basis (identification date? observation date? observation submit date?)