There's only one difference I've seen in Nintendo's third party strategy.
Under Iwata, most of the third party titles/ports funded by Nintendo were Japanese:
Ninja Gaiden 3, Devil Third, Bayonetta 2, Fatal Frame, Yakuza, The Wonderful 101. The same could be said for 3DS - most of its third party support was Japanese like Metal Gear Solid 3, Street Fighter, Monster Hunter and Resident Evil Revelations.
Under Kimishima/Furukawa, Nintendo has opened their wallets to fund more ports from western third parties.
- Diablo 3
- Skyrim
- FIFA
- Doom + Doom Eternal
- Grand Theft Auto Trilogy
- The Witcher 3
Fifa is a super interesting case. NCL provided EA with funding to build a brand new engine (from scratch) for Fifa Switch because they couldn't get Frostbite to work on the system at the time. EA wouldn't have bothered to create a new engine for Fifa Switch if NCL hadn't funded it.
In Iwata's defense: I'm very confident Iwata would have pushed for funding more western support on Switch after what happened with Wii U.