19 chart entries: Donna Summer
16: Diana Ross
15: Earth Wind & Fire, Rose Royce
14:
13: Heatwave
12: ABBA, Fatback Band, Rod Stewart
11: Boney M, Commodores, Jacksons, Stevie Wonder
10: George Benson, Hot Chocolate, Isley Brothers, Roy Ayers (+ Roy Ayers Ubiquity / Ubiquity), Tavares
9: Bob Marley & The Wailers, Cameo, James Brown, Real Thing, Village People
8: Bee Gees, Billy Ocean, Blondie, Gibson Brothers, KC & The Sunshine Band, Slave, Whispers
7: Brothers Johnson, Candi Staton, Chic, Crown Heights Affair, David Bowie, Detroit Spinners, Elton John, Gladys Knight & The Pips, Kool & The Gang, Michael Jackson, Raydio, Shalamar, Showaddywaddy, Sister Sledge, Teddy Pendergrass, Tina Charles, War
6: Ashford & Simpson, Barry White, Brass Construction, Eddy Grant, Electric Light Orchestra, Gloria Gaynor, Hamilton Bohannon, Herbie Hancock, Light Of The World, Linda Clifford, Manhattan Transfer, Marvin Gaye, Narada Michael Walden, One Way (feat. Al Hudson), Players Association, Ramsey Lewis, Randy Crawford, Rick James, Roxy Music, Smokey Robinson, Stylistics, Sylvester, Teena Marie, Trammps, Van McCoy, Wings
Note: these totals include collaborations, e.g. Donna Summer & Barbra Streisand / Diana Ross & Michael Jackson
