Things change over time. We used to have the most success rope dropping Magic Kingdom by starting in Adventureland and moving to Frontierland. Over time, that did not work as well. In our most recent couple of visits (pre-pandemic), We had great success with a Tomorrowland rope drop.
Buzz Lightyear is the absolute best attraction to rope drop. It is an attraction where the lines build later, but it is such a quick ride you can move on quickly to something else, For a 9 o'clock rope drop, we were able to do Buzz, The Speedway, and Tea Cups by 9:30 and were on our way to our Space Mountain FP by 9:30.
Buzz Lightyear is the absolute best attraction to rope drop. It is an attraction where the lines build later, but it is such a quick ride you can move on quickly to something else, For a 9 o'clock rope drop, we were able to do Buzz, The Speedway, and Tea Cups by 9:30 and were on our way to our Space Mountain FP by 9:30.