The Vertical route on the Sucker Play clears out space for the Dig. The Hitch occupies underneath coverage and creates a natural rub as well.
How you should be attacking the boundary one on one with different routes & taking what the defense gives you by boundary safety alignment & movement.
Four Verticals is a long “shelf-life” play. Offenses can run it multiple times a game, every week, vs. any coverage. There are so many variations of Four Verticals that the concept is easy to disguise and “same as” teaching can apply from one variation to the next.