It seems to be possible using the inat api. The GET/identifications/identifiers method “returns creators of identifications matching the search criteria and the count of matching identifications, ordered by count descending”. So for example a url to get the top 50 improving identifiers for Pieris brassicae would be:
The results are returned as json - which displays quite nicely in Firefox, but I’m not sure about other browsers. I don’t think there’s any way to adapt this method to get formatted output similar to the identifications page, though.