Gateway games generally have simple rules that are easy to teach non-gamers in order to attract new players into board gaming as a hobby. But they are great even for seasoned gamers to start off your game night or play between heavier games.
Sushi Go Party!
7 Wonders: Duel
Imhotep: The Duel
Ticket To Ride
Lost Cities Card Game with 6th Expedition
Jaipur (New Edition)
Isle of Skye: From Chieftain to King
Century: Spice Road
Tokaido: 5th Anniversary Edition
Forbidden Desert: Thirst for Survival
Ticket To Ride - Ding & Dent
Barenpark - Ding & Dent
Sushi Go! - Ding & Dent