I thought I had Photogenic on my PC-98 collection, but it wasn't. I suppose I'll try to go hunt it on the dark side of the japanese web later, but as of now I really don't feel like wasting all that energy on it.
Anyway, both gimmic and hebereke are from before 1995 (the golden age of sunsoft) while Photogenic is from 1997 and distributed by zero, so the composer is probably from their team.
>Do you have any idea why they put someone mediocre on this game or why they would even make this kind of weird arrangement?
Uh, that's actually fairly common. Way too common. If you want an easy example, Kadokawa asked playism (or whoever they were in the end) to develop YNDD. Symphonic Rain was developed by kuronekosan team even though it's a product made by Kogado. And we could go on and on; they just provide a budget and maybe direction, but leave the work at the hands of a smaller studio. I don't really know the background for such deals but my guess is that they do that to give smaller teams a chance to work and get experience in their business, plus the possibility of future partnerships in case of success.