Found the details - I went from 40mm WTB Nanos [0] to these 38mm GravelKing Slicks [1]. If you look at the product pages, the difference is pretty striking. I don't know much about the RoadSports, but at least when it comes to "slick-ness", it looks like you're already starting from a slicker baseline than I was.
They're pretty smooth overall, perhaps why I never really had an issue commuting with them, but I'm always looking to go faster!