What if Beatty and Jellicoe had swapped places at Jutland?
Short answerThe battle could change substantially, especially through scouting and coordination, but each admiral would face a different information and command problem.
NotesThe counterfactual cannot be reduced to personality alone. Jellicoe would handle the Battlecruiser Fleet and Fifth Battle Squadron with different coordination from Beatty. He might bring those forces against the High Seas Fleet, frighten it away, and end the encounter before Beatty arrived with the Grand Fleet. Beatty, meanwhile, would receive different information and instructions in the fleet-command role than he did historically. The result depends on scouting, timing, staffs, and force position as much as on either admiral's reputation for caution or aggression.