Best singers in US

ALL TIME

Mariah Carey/Universal/R&B (18 number ones, 79 number one weeks)

Jackson 5/Michael Jackson/Janet Jackson/Universal/R&B (27, 70)

Elvis Presley/Sony/Rock (17, 79)

Beatles/Paul McCarthy/John Lennon/EMI/Rock (46, 59 )

Supremes/Diana Ross/Universal/R&B (18, 22)

Queen/EMI/Rock (18 in UK, 2 in US)

Of an era

Madonna/Warner/Rock (12, 32)

Whitney Houston/Sony/R&B (11, 31)

Stevie Wonder/Universal/R&B (10, 25)

George Michael/Wham!/Sony/Rock (11)

Honourable Mention

Sting/Police/Universal/Rock (2)

Johnny Cash/Sony/Country

Best in UK

21 - Elvis Presley
17 - The Beatles
14 - Cliff Richard
14 - Westlife
13 - Madonna
12 - The Shadows 

12 - George Michael/Wham!
11 - Take That
9 - ABBA
9 - Spice Girls
8 - Oasis
8 - The Rolling Stones
8 - Elton John
7 - Eminem
7 - Michael Jackson
7 - Kylie Minogue
7 - U2
7 - McFly
6 - Sugababes
6 - Blondie
6 - Queen
6 - Slade
6 - Robbie Williams
6 - Boyzone
6 - Rod Stewart

6 - The Police/Sting
5 - Britney Spears
5 - All Saints
5 - The Bee Gees
5 - David Bowie