The final updates introduced characters like Petey Piranha, Wiggler, Kamek, Pauline, Diddy Kong, Funky Kong, Peachette, and Pauline.
For those interested in downloading Mario Kart 8 Deluxe on their Nintendo Switch, it's essential to understand the NSP and XCI file formats: Mario Kart 8 Deluxe Switch NSP XCI -Update 3.0....
Which are you currently using?