imo what made Prince and Bowie special (and Madonna and many others) was that they advanced identity politics in pop music and they subverted gender norms. they did all this while also making incredible music. what they did was revolutionary giving the time they were living in - as artists they were living in the future. living in the social media age, back in the 70s and 80s. they were doing identity performance art, like living Tumblrs of avatar invention, decades before of the internet and social media broke. this is part of what made them special. they were living in the future.
are there people doing this now? stuff that is unique and challenging and still super popular? Lady Gaga and Kanye are pretty great, the former even approaching that level w her early singles. but i really only like an album or so total worth of their material. Bowie has like a dozen albums or more worth of stuff that is great to mind blowingly amazing and cutting edge. ironically even tho attention spans have shortened since then, it seems to take longer for new music to come out. the icons were prolific af. there is good new stuff but only a fraction of the good stuff is promoted while trash is constantly thrown at the buying public.