Anyway, this is how I would rank each Nintendo series that has had at least 2* games and had a game released in the last 20 years:
S: Mario, Pokemon, Zelda, Animal Crossing, Smash
A: Wii, Splatoon, Kirby, Fire Emblem, Luigi
B: Donkey Kong, Metroid, Xenoblade, Pikmin, Brain Age
C: Nintendogs, Yoshi, Star Fox, Game And Watch, Punch-Out
D: F-Zero, Mother, Kid Icarus
Factoring in:
-Sales
-General popularity/awareness both inside and outside enthusiast circles
-Longevity and legacy
-Dormancy/current activity vs. when it started and when it was most thriving
I will not be taking any criticism at this time thank you
If series like Nintendogs and Star Fox got a new Switch game, they could definitely get bumped in, ditto DK. FE would be in B if it wasn't for Heroes, and I split Yoshi/Luigi from Mario since I feel at this point they are distinct enough (but not gonna bother breaking up the other various Mario subseries lol).
Honestly the fact that Nintendogs hasn't gotten a new game is so weird. It would be perfect for a mobile game.
*2 was arbitrarily included so I could list Nintendogs, otherwise I would have cut it off at 3.