Hardcore purists categorize the genre into "traditional roguelikes" (could be mistaken for original Rogue if you squint) and "roguelites" (all the other genre mashups).

In the traditional category, Switch has Shiren 5 and 6, Jupiter Hell, and Tanglewood. Maybe Dragon Fang Z and Void Terrarium, haven't played them. Crown Trick and Crypt of the Necrodancer/Cadence of Hyrule straddle the gap, not quite traditional and not quite "lite."

...and that's about the extent of it. A lot of traditional roguelikes are hobby projects without widespread commercial appeal that never make off PC. Meanwhile, there are hundreds of quality roguelites on Switch.