Developed by Nintendo EPD with SRD and Namco-Bandai assisting.
Any chance of NST helping ?? Paul Kranich said in a 2016 resume he worked on a mobile game,i remember insiders at the the time talking about nst working o mobile games too
https://patents.google.com/patent/US20190336860A1/en?assignee=Nintendo&sort=new
Yosuke Kabuki, Yugo Hayashi, Issei Takahashi
https://patents.google.com/patent/US20190336863A1/en?assignee=Nintendo&sort=new
Yugo Hayashi, Issei Takahashi, Ryoma Aoki
Programmer
Eri Abe
More Mario Kart Tour Staff?
https://patents.google.com/patent/EP3449985A1/en?inventor=Kosuke+Yabuki&sort=new
Kosuke Yabuki, Takeshi Miyamoto, Shigeto Murata (namco), Shinya Nakano (namco)
There are a few credits with roles in the DICE Awards page for Mario Kart Tour: https://www.interactive.org/games/video_game_details.asp?idGame=1702
Producer
Hideki Konno
Creative Director
Kosuke Yabuki
Game Directors
Yugo Hayashi
Shinya Fujiwara
Yugo Hayashi
Shinya Fujiwara
Yusuke Shiraiwa
Yoshinori Konishi
Kei Uramoto (SRD)
Yoshihisa Morimoto
Kenta Nagata
Ryoma Ogura (Namco-Bandai)
Katayama, Kenta (Namco-Bandai)
NOA/NOK/NHK/NOE Localization
Hixenbaugh, Dutch
Jorgenson, Danielle
Jouillat, Sabrina
Jun, Yuan
Kim, Soon-Il
McCaughan, Tim
Shen, Sean
Sáinz, Sara
Tardito, Alessandro
Teixeira, Babi
Wiseur, Thaddee
Kyosuke Shimokawa
Nintendo Game Director joined Dec 2016
Working on Mario Kart Tour (mainly the online services side and overall development)
"Communication with internal development team including programmers, designers and planners and associate companies"
"・Development with internal and external development team"
Previous: SEGA
Source: Linked in