For top-rope climbing, a dynamic rope is generally the best choice. While the forces generated in top-roping are lower than those in lead climbing, a dynamic rope’s elasticity still provides a safer and more comfortable experience. It absorbs some of the shock if a climber falls or slips, protecting both the climber and the anchor system.
Make sure to choose a dynamic rope with a thicker diameter (10-11 mm), as it offers greater durability and is better suited to the repeated wear and friction that comes with top-rope climbing.