It doesn't seem like anyone noticed, but Bandai Namco revealed all the stage credits during one of their livestreams in 2018:
https://youtu.be/So1I1rXPxEg?t=2872
I've added this information to the product page.
Hiroshi Okubo
Peach's Castle
AJURIKA
Kingdom Way
Junichi Nakatsuru
Splash Circuit
Taku Inoue
Tropical Coast, PAC-MAN Stadium
Katsuro Tajima
Bon Dance Street, Bananan Labyrinth
Torine
Omatsuri Circuit
Hiroyuki Kawada
Aerial Road
Takafumi Sato
Sky Arena
Ryo Watanabe
Bowser's Factory, NAMCO Circuit
Setsuo Sakamoto
Bowser's Castle
Mitsuhiro Kitadani
DK Jungle