BillBoard以前からのチャート遍歴図です。参考にしてください。
これだけ変わっているわけですが、結局は「R&B」が一番合うみたいですね。

Harlem Hit Parade
10/24/1942 Harlem Hit Parade
(Final 02/01/1945)

Juke Box
02/08/1945 Most-Played Juke Box Race Records
06/25/1949 Most-Played Juke Box Rhythm & Blues Records
11/15/1952 Most Played in Juke Boxes
06/30/1956 Most Played R&B in Juke Boxes
(Final 06/17/1957)

Best Sellers
05/22/1948 Best Selling Retail Race Records
06/25/1949 Best Selling Retail Rhythm & Blues Records
11/15/1952 National Best Sellers
02/20/1954 Best Sellers in Stores
06/30/1956 R&B Best Sellers in Stores
(Final 10/13/1958)

Jockeys
01/22/1955 Most Played by Jockeys
06/30/1956 Most Played R&B by Jockeys
(Final 10/13/1958)

Billboard
10/20/1958 Hot R&B Sides
11/03/1962 Hot R&B Singles
11/30/1963 ~ 01/23/1965 集計なし
01/30/1965 Hot Rhythm & Blues Singles
06/05/1965 Top Selling Rhythm & Blues Singles
04/09/1966 Top Selling R&B Singles
01/13/1968 Best Selling R&B Singles
04/06/1968 Top Selling Rhythm & Blues Singles
08/23/1969 Best Selling Soul Singles
07/14/1973 Hot Soul Singles
06/26/1982 Black Singles
10/20/1984 Hot Black Singles
10/27/1990 Hot R&B Singles
01/02/1999 Hot R&B Singles & Tracks
12/11/1999 Hot R&B/Hip-Hop Singles & Tracks