If you think about it logically, the Wii U makes a pretty objective argument for being the best console of all time:
Best Open World Game: Obviously BotW. Yes, there's also a Switch version, but it's a Wii U game through and through. It was marketed for years as a Wii U game. It's also one of the all time highest rated games ever.
Best 2D Platformer: Tropical Freeze. Is anyone really going to challenge this? TF is an absolute masterclass in 2D platformer design and production values. Best Donkey Kong, best 2D platformer.
Best Kart Racer: Mario Kart 8. Again, yes there's a Switch version and that got a bunch of extra DLC, but the original version was still the karting GOAT when it released. Crash Team Racing? More like Nap Time Snoozing.
Best Hacky Slash Game: Bayonetta 2. I know some fans prefer the combat of 1, but I can't think of another action game that's as stuffed with boss fights and spectacle as B2. Not even God of War 3. Once B2 gets going, it's just non stop boss fights and back to back slamming action.
Best 3D Platformer: It's not 64. It's not Galaxy. It's 3D World. No other platformer has managed to cram so many ideas so effortlessly into one game.
Best social media platform: Clearly it's Miiverse. Like Twitter, but with a fraction of the racism and way more positivity.
EDIT
Best zombie game: Zombi U. Sorry Last Of Us, but real time rucksack gameplay is far scarier and more heart pounding than any number of feel sad scenes.
EDIT
Best Garden Game: I can't believe I forgot to include this. It's obviously Pikmin 3. One of the best designed, beautifully put together games ever.