Over the last three drafts the Tennessee Titans, Houston Texans, Jacksonville Jaguars, and Indianapolis Colts have used six 1st or 2nd round picks on the offensive line.
Offensive linemen aren’t household names most of the time, but you’d be hard-pressed to find a great team that didn’t have a very good offensive line.
Generally, the best offensive lines end up being the best teams at the end of the season. According to the offensive line rankings from PFF, the Cowboys were the only team in 2019 to have a top-5 o-line and not make the playoffs.