Motorsport championships similar to or like NASCAR Xfinity Series

Pickup truck racing series owned and operated by the National Association for Stock Car Auto Racing, and is the only series in NASCAR to race modified-production pickup trucks. One of three national divisions of NASCAR, ranking as the third tier behind the second-tier NASCAR Xfinity Series and the top level NASCAR Cup Series. Wikipedia

Top racing series of the National Association for Stock Car Auto Racing . Known as the Grand National Division. In 1971, when the series began leasing its naming rights to the R. J. Reynolds Tobacco Company, it was referred to as the NASCAR Winston Cup Series . Wikipedia

Regional stock car racing series owned and operated by the Automobile Racing Club of America (ARCA) and the National Association for Stock Car Auto Racing (NASCAR). Races are held at oval tracks ranging from 1/3 to(-) in length and on two road courses, 1.53 and 2.45 mi in length. Wikipedia

American auto racing sanctioning and operating company that is best known for stock car racing. Founded by Bill France Sr. in 1948, and his son, Jim France, has been the CEO since August 6, 2018. Wikipedia

American professional stock car organization that currently competes in the NASCAR Cup Series. One of NASCAR's largest racing teams in the 2000s and early 2010s, Roush formerly ran teams in the NASCAR Xfinity Series, NASCAR Camping World Truck Series, ARCA Racing Series, Trans-Am Series and IMSA Camel GT. Wikipedia

The 72nd season for NASCAR professional stock car racing in the United States and the 49th season for the modern era Cup Series. The season began at Daytona International Speedway with the Busch Clash, the Bluegreen Vacations Duel qualifying races, and the 62nd running of the Daytona 500. Wikipedia