S-Tier: Mario and Pokemon. Nothing else they own can come close to the recognizability of these two. These should have no problem getting into the parks and making great lands.
A-Tier: Zelda, Luigi's Mansion, and Donkey Kong Arcade+Country. DKC would be C tier but gets the boost because of people's knowledge of the arcade game, the connection to Mario, and just how solid of an idea Mine Kart Madness is. A DKC subland is perfectly reasonable. Luigi is just more Mario, as well as being a solid ride idea. Zelda has always been a bit more niche than Mario, but is still one of the biggest and most recognizable gaming franchises out there. It might take longer than A-Tier but I don't doubt these will all be implemented somewhere in a big way.
B-Tier: Kirby, Animal Crossing. Recognizable and popular, but not nearly as much as S-Tier or Zelda. Kirby seems like the next thing after the Big 3, but I don't see a full land coming. Maybe a few off-the-shelf kiddy attractions and a Meet and Greet, but I suspect Universal will throw the bone to Illumination/Dreamworks before either of these get in. That said, a lot of merch will be sold of these, and they will probably be really popular M&G attractions if implemented.
C-Tier: Nothing really comes to mind. Most Nintendo franchises are either very popular or incredibly core and niche.
D-Tier: Metroid, Star Fox, Splatoon, Pikmin. Not popular/recognizable enough at all to justify a full land/ride over others but with just enough niche popularity to point them out above F-tier franchises. You might see a little bit of merch of these IPs, specifically Pikmin/Splatoon. I would be very surprised to see a Samus M&G.
F-Tier: Punch-Out!!, F-Zero, Mother, Xenoblade, Game & Watch, Fire Emblem, Kid Icarus. Incredibly niche and/or aging properties that often require longterm commitment with the game/series to have proper understanding of the IP. Very little to no icon status. You could make a wonderful BTTF-style ride based off of Kid Icarus or a really cool dinner-theatre experience with Punch-Out!!, but the audience is minimal and returns will be small. Merch will be nonexistent outside of trace references to the Switch, Wii, NES, and Game and Watch devices. If Samus doesn't get a M&G, what chance does Captain Falcon, Pit, Ness, or Shulk have?