WHO IS IT - in the US
Physical release in the US: 6th April 1993
When I checked the chart positions I saw the release of Janet's That's the way love goes gave a boost for the Who is it around early May.
Similarity to Jam the great positions on dance charts and the poor single sales.
Billboard hot 100: 44, 33, 25, 18, 15,
14, 14, 18, 21, 32, 39, 50, 61, 70, 72, 81, 91, 99
Top 100 R&B singles: 32, 26, 21, 17, 14, 9, n/a, n/a, 16, 24, 35, 43, 55, 62, 65, 68, 74, 84, 81
R&B radio monitor: 26, 18, 17, 15, 20, 13, 10, n/a, 10, 15, 23, 21, 28, 33, 32, 37, 46, 60, 65, 65
Top radio: 70, 37, 29, 20, 18, 21,
14, 15, 18, 19, 20, 30, 33, n/a, 43, 55, 64, 72
Hot dance music club play: 35, 21, 15, 9, 6, 3,
1, 10, 14, 17, 25, 50
Hot dance music maxi singles sales: 6, 2, 2,
1, 1, 3, 8, 25, 48
R&B single sales: 31,
25, 32, 31, n/a, 50, 48, 52, 54, 71
Top single sales: 41, 36, 38, 27,
26, 40, 43, 50, 55
Top 40 airplay mainstream: 27, 22, 13, 10,
6, 6, 6, 6, 9, 13, 19, 24, 27
Top 40 airplay rhythm/crossover: 33, 21,
21, 25, 25, 28, 39
Sources: https://worldradiohistory.com/Archive-All-Music/Billboard-Magazine.htm,
https://www.billboard.com/charts/hot-100