When Jordan van den Berg says it’s in his DNA to be a professional football player, he’s not kidding. His grandfather, Francois van den Berg, twice placed in the top six in the Mr. Universe bodybuilding competition. His grandmother, Joan Rocci, held multiple South African records in swimming. They “definitely” get the credit for the incredible athleticism that has made the Georgia Tech defensive lineman one of the most underrated prospects in this year’s draft. The Green Bay Packers were among the nine teams that brought him in for a predraft visit . “It’s been awesome,” he told Packers On SI after one of his recent visits. “I’ve been traveling. I’ve been living the dream. This is everything you could dream for when you’re in high school.” It might have seemed like an impossible dream when he was in high school. van den Berg was born in South Africa and moved to the Atlanta area when he was 10. As a senior in 2019, he was a 6-foot-3, 230-pound linebacker at Providence Christian Academy in Lilburn, Ga.…