Switch will definitely be in third after this year. BotW2 will carry the holidays, if it actually releases this year (fingers crossed), while Splatoon 3 will light up sales in Japan when that drops.
https://www.nintendo.co.jp/ir/en/finance/hard_soft/
With the latest numbers from Nintendo, the Switch has passed 100 million hardware units and outsold both the PS1 and Wii. It's now the 5th best selling games system of all time behind the PS2, DS, Game Boy/Game Boy Color, and PS4.
Well...