Too many to list, but I'll try and list a few of the main ones:
THQ's WCW and WWF games - As much fun as GoldenEye 007 and Perfect Dark were with friends and family, they were always secondary to these games during weekend visits.
NHL Hitz 2002 - One of my nephews and I had an epic undefeated streak in this game until the day we all stopped playing. Unfortunately none of the following games in the series were as good as this one, so we didn't get to continue that streak, but that's what I'll always remember this game for.
Mario Kart Wii - Mario Kart 8/Deluxe is nine years old now and even with the new content being added (which I bought but haven't played beyond Wave 2 I think) I think you might have to combine the time I spent in the Wii U and Switch versions to surpass the amount of time I put into the Wii version by itself.
Super Mario Maker and
Super Mario Maker 2 - A few months ago I unpacked my Wii U just to play some 100 Mario Challenge for old times sake and have been revisiting it off and on since then. Super Mario Maker 2 released in 2019 and I still play it consistently.
As for SMM on 3DS, let's just pretend that version doesn't exist.Animal Crossing: New Leaf - At last count a couple years back I had over 8,000 hours invested into this across multiple versions of the games from different regions. I never came close to that with the Switch version because they removed a lot of the fun multiplayer stuff and this isn't really a game that stays fun as long if you only play it solo.
Horizon: Zero Dawn and Horizon: Forbidden West - I still need to get around to buying the DLC for Forbidden West, but besides that I 100% completed both games, the expansion for the first game, platinum trophies, all that stuff. I don't know how much time combined I spent on the games but approximately 0 minutes of it did I ever feel bored.