Each car is listed in its base rarity (☆) as it appears in-game. You can check the rarities of each car by clicking on the link to each car page
718 Cayman S 982c "Excalibur"
911 Turbo 930 "Walpurgis"
718 Cayman GT4 RS 982C Weissach
918 Spyder Weissach Package