If you want a new Switch with an included game you’ll have to get The Super Mario Odyssey Nintendo Switch Edition. This bundle comes with the Switch & a digital copy of Super Mario Odyssey. I’ve pasted a list of all the current bundles available now down below.
Don’t forget the Splatoon Bundle, with the special colored Joy-Cons. Also, some retailers are offering games in their own store offered bundles. I just saw an ad from Walmart that was offering 1-2 Switch in a featured bundle. I think GameStop is offing a variety of different bundles.