By Trevor Anderson Since Billboard first began its national survey of song sales in the 1940s, the ever-changing ... at the best of the best – the No. 1 year-end titles on the Hot Rap Songs ...

As it racks up its twenty-first nonconsecutive frame on top of the Hot Rap Songs tally, “Not Like Us” resets an all-time record. Lamar’s single now ranks as the longest-running No. 1 ever on the chart ...