COCX-33517~8: Katamari Original Soundtrack Damacy

[Kadai]

Looking around on the internet, I have found this next website: http://www.tsutaya.co.jp/works/20169893.html

There, is listed some composer information that provides some kanjies for some composers (and also, I do not know how accurate it is)

So far, I have found the next ones:
三角由里 maybe is Yuri Misawa
杉山将司 maybe is Shoji Sugiyama.

But I would love if someone knowing japanese could confirm this, specially because google romanizes it in other way.