Wow, fascinating tape you found here, Carl. Lots of games and even a few artists here I've never heard of.
The mystery guys whom I may or may not ending up researching in the future:
TARO: Norihiro Furukawa? Credited for both Quiz Theater (3tsu no Monogatari) and Arabian Magic, both of which Furukawa worked on. Would be a new alias.
HIRITAN: No clue.
Dead Connection's "sound composer" is "SOUSUKUN."
MISAO: Nope.