If we use your definitions then Smash Bros., Yoshi and most recent Zelda and Mario titles wouldn't count either since they are made by developers that Nintendo doesn't own.The need to go back to Handhelds, it be like listing MS In-House PC games of the past.
When it comes to console gaming, NCL the same old sequels each time Splatoon IP was the one great exception and just showed what could happen when NCL allowed their teams do try something new. Arms wasn't bad either.
But let's look forward to more sequels to Mario and Zelda Smash Bro, Yoshi and Mario Tennis/Golf sequels outsourced
It's the Nintendo way.
I'm not saying I don't want Nintendo to publish more new IP. it's definitely something they can do better.
But I think restricting a publisher's games based on developer ownership is quite arbitrary. To me Elden Ring is one of the most exciting new IP coming out next year, and the fact it is not developed in-house by Bandai Namco doesn't matter.