I can fix these things myself, but what do others think?
Earlier this year, I found out that the "Miwa Ikuta" in the Radical Dreamers credits list was actually "Miwa Shoda". I've already fixed that one.
Now, a few months ago, I was looking at credits from other Square Satellaview games, and there was some overlap in the credits. The "K. Yamashita" in the Demiforce credits is "山下 弘二" in the original Japanese. Probably "Koji Yamashita", not "Kyoko".