I agree with the rest, but Animal Crossing is really popular. It's the second best selling game on Switch. It just doesn't have a ton of ride/land material.
New Horizons has bumped up Animal Crossing cred a bit from where it was before, but I still place it firmly in the category with Kirby and the rest. Animal Crossing was never a huge seller before NH. Wild World and New Leaf did pretty good but were decently far down best seller lists. I believe the same would've happened to New Horizons. But when an impossibly widespread and frightening pandemic forces everyone on Earth to stay inside with mountains of free time on the launch day of your fun carefree lifesim game, it'll throw the numbers off a bit.
I 100% expect the Animal Crossing series to go down from here, not up. We're already seeing declines. Mario Kart 8 Deluxe, an eight year old game and Switch launch title, has retained the top spot that was all but guaranteed for AC:NH. It was a bit of a fad, and people have begun to lose interest again. I do love Animal Crossing but it kinda lost it's chance at being one of the big dogs by not investing in keeping the IP relevant past 2020.
I've ranked them before but here's my tiers of likelihood for Theme Parks.
S-Tier: Super Mario, Pokemon,
A-Tier: Mario Kart, Luigi's Mansion, Donkey Kong, Legend of Zelda
B-Tier: Kirby, Animal Crossing,
D-Tier: Super Smash Bros, Splatoon, Star-Fox, Metroid
F-Tier: Literally everything else
Luigi's Mansion would be with Kirby and AC if it weren't for it's compatibility with Super Mario. DKC should honestly probably be F-Tier, but it has Nintendo's second biggest character as its star, is compatible with Super Mario, and in order to make use of Donkey Kong's best ride concept, Minecart Madness, you need to use the DKC franchise.
But we should probably continue this discussion in the Nintendo in Universal Parks thread if we wanna keep talking about the future. Don't wanna clog up the construction thread.