Not sure what indie game Nintendo had a hand in. Maybe Cadence Of Hyrule?

I have Cuphead on Steam. I don't like it being called an Xbox exclusive. That grosses me out and makes me sick to my stomach. I also have Ori on Steam. And Castle Crashers on PS3. And Turok was on N64.

You have a very strange way at looking at things. MS full published Cuphead hence they have the rights to the game and Ori is a MS IP. I recommend you not playing games that MS have a hand in, like Ori Will of the Wisps or Halo MCC etc. Because its under the Xbox banner regardless if it releases on Steam. You basically sound like this, You want to eat a Mcdonald's Cheese burger but don't want to buy it from Mcdonalds.

I do agree with Castle Crashers and Turok since MS had no part in those games. 

Turok was on N64 before X1, so not X1 exclusive...like at all.

As far as I know Nintendo already pushed indie devs to go multiplatform before MS did, Runbow was meant to be a Wii U exclusive but Nintendo stressed to the devs the importance of gaining those extra sales in order to stabilize their studio for future projects, the same happened for numerous other titles and still happens now despite Nintendo moving on to a successful platform

MS is putting their games on Switch because it makes good business sense, not because they want to do Nintendo a favor.  With that said, I'd say that it truly is important for Switch to get Minecraft content (the same holds true for PS, but maybe to a lesser extent due to the different demographics of PS4 gamers).  That game is still hugely popular with kids, who are part of Nintendo's target market.  So, the ability to play Minecraft there probably does get more kids lobbying mom and dad to buy them a Switch.  It also keeps Minecraft off of the TV or PC, which is appealing in many family situations.  

I hope so: I just want what's best for the indie game and more platforms means more potential sales.

Except their headquarters in WA are pretty much across the street from each other. I don't think it's unlikely they get together from time to time and collaborate on things.

Then go ahead and pay up for the porting process.

Thats what you dont get.MS is porting Cuphead over because he is going to get alot of money out of this and because they are exiting the console race and becoming a third party.

Nintendo has nothing to gain to pay for indie to port over games.And the indies themselves must want to port over.If they are not on the XOne by now, its simply because they think its not worth it.This has nothing to do with Nintendo.

NIntendo owes MS nothing. MS is a 3rd party publisher/developer now. They don't care about keeping games exclusive to Xbox. They care about how many XBL subs they have, and how many copies of a game they sell.