I updated the album info and removed the ambiguous name (kanji) since they are well known.
The first was Shoji Kawamori, 河森 正治, the famous mech designer and co-creator of Macross and other mech-style anime.
The second was Hiroshi Ichikura, 一倉宏, who has a defined wiki entry to back up the reading (
http://ja.wikipedia.org/wiki/%E4%B8%...80%89%E5%AE%8F)
The third was Hiroyuki Yoshino, 吉野 弘幸,who has a defined wiki entry to back up the reading. (
http://ja.wikipedia.org/wiki/%E5%90%...9C%AC%E5%AE%B6))
The fourth was Yuho Iwasato, 岩里祐穂, which had no reason to be ambiguous since he's an acclaimed lyricist for the last 20 years.
The fifth was Dai Sato, 佐藤大, who has a defined wiki entry to verify the reading. (
http://ja.wikipedia.org/wiki/%E4%BD%...97%A4%E5%A4%A7)
The sixth was Mike Sugiyama, マイクスギヤマ, who also has a defined wiki entry to verify the reading (
http://ja.wikipedia.org/wiki/%E3%83%...83%A4%E3%83%9E)