just covering stuff from the Nintendo Direct
Illusory Revelations#FE (SMTxFE)- reconfirmed to be Atlus and sounds as if Intelligent Systems doesn't even have an advisory role. The roducer, Shinjiro Takada, revealed his role in a short bit on the game's site and revealed the character designer to be toi8
Ultimate Angler (Streetpass game) - Prope (Probably the reason Yuji Naka retweeted the stream)
Battleground Z (Streetpass game) - Good-Feel
Streetpass Premium - expecting this to be the same as the other Streetpass updates, Nintendo SDD
Pokemon Rumble World - Ambrella (revealed via a rating in Australia)
Tap Amiibo - currently unknown, maybe Indieszero and some Nintendo EAD Tokyo staff
Animal Crossing: Happy Home Designer - Probably some EAD2 staff, but unconfirmed who exactly
with Smash DLC & Updates and the Mario Kart DLC & Updates, I think Nintendo is thinking of these games as more services so I expect small teams from Bandai Namco & EAD1 to continually pump out updates for these games for another year or so
Also, Nintendo localized The Swapper and Little Inferno for Japan. probably no traditional development staff was used on these but they are probably noteworthy
Next Level Games, Retro Studios are still no shows and with the posting by Nintendo for Nintendo NST right after Tipping Stars came out, I'm pretty sure NST is working on something new. Also, Monster Games, from combing for their employees, I discovered a couple people left in 2014 and one did list Xenoblade 3D so that could have been done for a couple months. Camelot is also noteworthy in not currently working on something