Apart from NintendoLand, I'd say Lego City Undercover is one from retail, sales are similar than ZombiU but those are still full price. Meanwhile I think that ZombiU has had its sales mainly in the bargain bin department. Then you have the recently released Captain Toad, that has surprised quite a few.
From the eShop Shovel Knight was said to be a success, and NES Remix spawned a retail release.
There could be more.
Nintendo Land, Lego City Undercover, NES Remix, and Captain Toad are spin off games. I wouldn't consider them new IPs at all.
I agree with Shovel Knight though, as I said in my post.
Well, this is new.