Some surprises,have opinions on rankings but solid list overall 

50 Greatest Rap Groups of All Time: Nos. 50-1

Some surprises,have opinions on rankings but solid list overall  50 Greatest Rap Groups of All Time: Nos. 50-1 Billboard counts down the best hip-hop groups ever in honor of the genre’s 50th anniversary. https://www.billboard.com/lists/best-rap-groups-hip-hop-all-time/3-n-w-a/

Love Outkadt, but its Eric B & Rakim 💝

Cici Zhao

Outkast is great but no number 1!  There are some good groups without enough work or large enough catalog on this list.  Wu-tang, personally is the  greatest group . I don't think Rakim and Eric be should be in this category.  I consider groups is 2 or more rapping.  Wutang to me is number 1, Outkast, Mobb Deep, Public Enemy, Run DMC, Geto Boys, and Tribe called Quest have all gotta be in the top ten

Bobby

I think Run DMC has to be in the top 3 and De La Soul has to be in the top 5. But every group in the top ten deserves to be there.

D J

A group of likeminded people in Hip-Hop are talking about this.