tensai to shikenkan to hakui to aoi kami no ero i hon (paniponi): This looks like it's almost certainly an AP. Still, good find. Just saying.
MistyMoon: This has actually been around a bit (saw it on a Yahoo group, though in a much less complete form). But it's just straight DG, for the most part - nothing too uncommon for any sort of hentai work. Certainly not in the same class as some of the stranger stuff from Saizou (which I think you link to in your text file in the .zip).
The Unknown manga: I think I've seen this drawing style... It looks very similar to the story in which there's a young boy who spurns a girl. She then gets hit on the head with what looks like 'angel semen' and ages forward a hanful of years. He screws her, dumps her, and she gets hit again and jumps forward a few more years (think preteen to teen to mature). Looks like the same thing.
All in all, good finds.
