Welcome to the forum!
These two threads will probably have some of the info you’re looking for. You could certainly use these techniques to generate lists of taxa for different places and compare them on your own. I’d read through, and, if there’s something specific you want that isn’t in those, search the forum or followup with a specific question.
https://forum.inaturalist.org/t/how-to-use-inaturalists-search-urls-wiki-part-1-of-2/63
https://forum.inaturalist.org/t/how-to-use-inaturalists-search-urls-wiki-part-2-of-2/18792