Yep. They should learn from Howard, who admits that his success came from focusing on hitting the ball to the left/center alley, and after his injury, he tried pulling to get more power and that killed his career.
Hoskins has a more compact swing than Harper, but gets in trouble trying to pull outside pitches, Harper I think was trying to earn his contract earlier in the season and relaxed in August.
The best swing is Kingery, the most infuriating hitter is Realmuto, who consistently chases outside sliders, as a catcher, you'd think he'd know how they're setting him up. Segura has a very good stroke, if he had more plate discipline he could challenge for the BA title (chases too many pitches out of the zone for weak contact).