oh wow! such variations! Because of my limited personal exposure to folk instruments (there isn't much of an interest in the USA, so most bands I listen to come from Europe/Asia), I know the overarching categories, but not such details .
I recently saw in concert a folk band from the Czech Republic, and they have a bagpipe called the dudy (doody), and I am not sure how the Gajde sounds comparatively to that and maybe an Ullieann...