Billboard magazine has released the final top 10 in their ranking of the 50 Greatest Rap Groups of All Time. The magazine reports: In determining these rankings, the Billboard editorial team again took the following criteria into account, not in any specific order: body of work/achievements (charted singles/albums, gold/platinum certifications, other awards), cultural impact/influence (how the group’s work fostered the genre’s evolution), longevity (years at the mic), lyrics (storytelling skills) and flow (vocal prowess). Our definition of groups includes duos, proper groups and more nebulous collectives. Most notably, Inclusion on this list is based on the accomplishments of the group as a unit — not what the individuals may have separately accomplished. We tried to walk the line between what constitutes a group versus a collective or a crew, though at times that was not entirely clear. 50 Cent's G-Unit was ranked at No. 19 but the list does not include Griselda, Slaughterhouse, D12 or Bad Meets Evil. You can check the entire list below: 1) OutKast 2) Wu-Tang Clan 3) N.W.A. 4) A Tribe Called Quest 5) Run-D.M.C. 6) Public Enemy 7) Eric B. & Rakim 8) Salt-N-Pepa 9) De La Soul 10) The Roots 11) Migos 12) Grandmaster Flash & the Furious Five 13) Mobb Deep 14) Fugees 15) Naughty By Nature 16) Beastie Boys 17) Cypress Hill 18) Three 6 Mafia 19) G-Unit 20) UGK 21) Bone Thugs-N-Harmony 22) The LOX 23) Sugarhill Gang 24) The Diplomats 25) Hot Boys 26) EPMD 27) DJ Jazzy Jeff & the Fresh Prince 28) Geto Boys 29) Gang Starr 30) Clipse 31) Boogie Down Productions 32) 2 Live Crew 33) Goodie Mob 34) Brand Nubian 35) Pharcyde 36) Heiroglyphics 37) 8Ball & MJG 38) Big Tymers 39) Slum Village 40) Onyx 41) Little Brother 42) Heavy D & The Boys 43) Kid N Play 44) Kriss Kross 45) Pete Rock & CL Smooth 46) Yin Yang Twins 47) Rae Sremmurd 48) City Girls 49) Black Star 50) MOP [VIA]