Traffic and authority are different lists
A directory's own traffic tells you how many people might see your listing. Its Domain Rating tells you what its link does for your ranking. Some of the busiest sites here give nofollow links, and some of the strongest links come from directories nobody visits. If you need users this month, work this list; if you need to rank next quarter, work the dofollow list; a new product needs both.
Visits are estimated monthly organic search visits to the directory as a whole, not to any one listing. Your share depends on category pages, homepage features and, on the launch platforms, the day you launch.
How to work this list
The review marketplaces at the top only send traffic once you have reviews, so claim the profile and move on. The launch platforms send a burst on launch day and a trickle after; pick one to prepare properly rather than launching everywhere at once. The listing directories in the middle send a steady few visits a month each, which adds up across twenty of them.