That final play sort of looks like a lot of the end-of-game plays we run. Tatum/Young runs to the backcourt, the ball gets inbounded to them where they are obviously open, they take up the ball and then either take a deep 3 off a screen (or make a slight move to get separation) OR maybe make a quick pass and then get it right back to take a quick shot.
ATL did the same. Young collected it, then ran up with the ball. Then he sort of made a move to at least have an open look from the logo, and credit to him, he made it. Almost Lillard-esque.