CPCA-1061 | GioGio no Kimyou na Bouken: Ougon no Kaze Original... - VGMdb (http://vgmdb.net/album/3118)
CPCA-1022 | JoJo's Bizarre Adventure Original Soundtrack - VGMdb (http://vgmdb.net/album/1545)

And if possible (although probably impossible):
APCG-4032 | JoJo's Bizarre Adventure - VGMdb (http://vgmdb.net/album/4184)

This torrent: NyaaTorrents >> Torrent Information >> JoJo no Kimyou na Bouken OVA & Game OSTs (http://www.nyaa.eu/?page=torrentinfo&tid=356043) (have a good amount of seeds, I downloaded this one's yesterday) have that ones you are requesting (except APCG-4032 | JoJo's Bizarre Adventure) and also have the 3 OVA soundtrack's.
All Soundtrack's in WAV+CUE.
In the torrent description field there's a pastebin url with depositfiles links, if you don't use torrent's. ;)

This torrent: NyaaTorrents >> Torrent Information >> JoJo no Kimyou na Bouken OVA & Game OSTs (http://www.nyaa.eu/?page=torrentinfo&tid=356043) (have a good amount of seeds, I downloaded this one's yesterday) have that ones you are requesting (except APCG-4032 | JoJo's Bizarre Adventure) and also have the 3 OVA soundtrack's.
All Soundtrack's in WAV+CUE.
In the torrent description field there's a pastebin url with depositfiles links, if you don't use torrent's. ;)

haha I NEVER would've guessed nyaatorrents to have these soundtracks. Thanks so much! And thank you also for all the soundtracks that you've shared with the community yourself!