Everything that released early has a good chance for a sequel, except for Super Smash Bros. Ultimate. Another 3D Zelda, 3D Mario, Mario Kart, Mario Party, Splatoon... three of those are very much expected to get sequels anyway. Pokémon will have several games if we combine regular and Let's Go variation, because Pokémon releases almost every year.
It has to do with how long Nintendo is expecting the life span of the Switch. If the successor should release at 2023 or ealier, I won't expect a new 3D Zelda, Mario Kart or Splatoon on the Switch. I estimate that Nintendo would make sure to have a great first year for their new system as they did with the Switch. Therefore they would save those games for the first year of that new console.
But I do see sequels for Mario Party and Super Mario Odyssey arriving on the Switch as well as the different Pokemon games that you mentioned.