“The dynasty that is strong now is almost always going to be the one that is least favorable,” he said. ”People have a more powerful rooting interest against them.”

Pro sports’ other reigning dynasty at the moment, the Golden State Warriors, finished middle of the pack in popularity. The Bay Area franchise, which has won three titles since 2015, came in at No. 7 on the list with a net favorability of 15 points.

The Michael Jordan-led Chicago Bulls — which won six titles between 1991 and 1998 — topped the list as the most popular dynasty at 30 points.