I don’t know if it is available on Switch, but I’d heartily recommend “Invisible Inc” for some turn-based tactical fun; though this is a tactical sneak 'em-up.
The story line is linear but quite strong, and the art style is right up my 1960’s super spy alley (I’m still waiting for a third installment of the adventures of Kate Archer; No One Lives Forever I and II really tickled me).