TheMisterManGuy said:

Look at any Fire Emblem and Kirby title as an example. The Copyright notice is always "©20XX Nintendo/INTELLIGENT SYSTEMS".

That's your example?  They are practically a 2nd party developer.  This has a list of games from them:

I'm actually surprised they haven't been turned into a 1st party developer.

A warrior keeps death on the mind from the moment of their first breath to the moment of their last.