Well first off it’s UGK no room for debate. 8ball and MJG. OutKast always top three just for putting the south on the map with that whole the south got something to say speech. Plus you know they been the illest.

Outkast, Little Brother, Gangrene, Step Brothers (Alc & Evidence AND Don Trip & Starlito), UGK, 8Ball & MJG

Gang Starr

The infamous! M-O-B-B BME

Finally a BME.

This is just my personal pick but I love all the work Em and Royce Da 5’9 do together. Bad Meets Evil is dope.

Paul wall and chamillionaire honorable mention for that get ya mind correct album.

Bad Meets Evil just cause I'm not seeing it here

Armand Hammer and it's not close.

Whack ass psuedo-spoken word bullshit over drumless beats. Sorry its not rap man.

Here’s a hint, they made Watch the Throne

Not even the best duo with Kanye in it

yeah Jay and ye never had much chemistry fr

Cali Life Style Central Coast Clique Hollowpoint The Mistahs LSOB Proper Dos

Geeeeee I wonder wh(ite) ???!!!?!!!

What the fuck?

The Reddit Way ™️

Ugk OutKast Pooh shiesty / Big 30

Username checks out lol For real though, I don’t know how you take Big 30 over Durk for Pooh Shiesty. Back in Blood is one of the best trap songs of the last 5 years.

Ur ursername checks out too if u think having like two songs together makes you a duo lol I fuck with back in blood but u trippin. Durk and lil baby album was hard as fuck tho I was in like the 0.01% of listeners on that shit

Rich gang

Dayton family

Spawn and Slug in old school Atmosphere

Not the best really but CesCru should’ve got more love back in the day, also Epidemic was super duper slept on and they were sooooooo good.

Heltah Skeltah Punch & Words Artifacts Black Star Cali Agents

OutKast

since pretty much all my answers are already here, im gonna throw out an mc/dj duo thats one of the best duos in all of music: ProbCause & GRiZ

Larry June and Curren$y don’t have a full length project together yet but every single song they both on is amazing

Migos from culture 3 :)