Rank Nintendo's systems by third party library

[Shiken]

Probably SNES at number 1.

NES at number 2 (pretty much had all 3rd party support, but SNES had the better library IMO)

Nintendo Switch at 3 as it gets a healthy mix of collaborations, remastered ports, and current gen 8 titles as well from big 3rd party publishers despite not having the same amount of support as NES and SNES.  It also has spectacular indie support however.

N64 at 4 as it does have a good amount of games from 3rd parties made specifically for the console, but quality was all over the place. A lot of gems, and a lot of sloppy games that did not transition well to 3D.

GameCube at 5. This console I have the least experience with, but I feel 3rd party support was around N64 level or a little less.

Wii would be 6 due to having a lot of shovelware, despite having strong 3rd party support overall.

WiiU is dead last, as 3rd parties all but abandoned it before we knew what was going on.

Honorable mention, all Nintendo dedicated handhelds have had great 3rd party support, and consistently, across the board. I will not rank them individually, but I will say they all land in the SNES and NES zone of 3rd party suppory.