Songwriters are ranked based on their writing credits on songs featured on the Billboard Hot 100.
You can read more about the methodology behind ranking on this page: Methodology
Creatives who are ranked on the songwriter chart have songwriting credits on Hot 100 songs. Because producers and recording artists also tend to have songwriting credits on songs they helped create, they are a part of this songwriter ranking, even though they may not exclusively be songwriters.
While there are usually hundreds of people with songwriting credits on charting songs every week, we publish the top 20 to highlight the creatives that made the major moves that week.
You can see our ranking of the top 50 songwriters of the year on our year-end chart here: 2018 Chart
Feel free to ask any question about the Top Hitmakers chart to the Royalty Exchange charts team by emailing firstname.lastname@example.org