Almost anyting is available on Blu-ray. In some cases DVDs are available and more than good enough.
F.e. Meet the Feebles was a very low budget production, where the source material is below DVD resolution.
Here you can order Alien Space Avenger (DVD):
Operation Condor also had some Blu-ray releases in A + B regions (plus a lot of DVD releases)
Nice last time I was searching online I think it was 2017 couldn't find any finally few of them are in blue ray ,
Cute and honest Sega Saturn fan, also noone should buy Sega grrrr, Sega for life.