I also wanted to add something in regard to No Limit and CMR. Both labels had rather huge followings, but in comparison to OutKast, they didn't have the credibility or respect. I'm not saying that they weren't good, because No Limit actually had nice lyricists (more so than CMR even though each member of the Hot Boys had their moments). The thing is, CMR and No Limit were frowned upon for various reasons. They caught it harder than Kast did. Even now when people mention The South, people will straight up on every Southern artist, but will make exceptions for Scarface and OutKast. No Limit is actually blamed for killing Hip Hop (which I disagree with, but a lot of people hold that opinion). Same goes for CMR with bling, people cite that as a downfall for Hip Hop as well. Even still, the one thing you can't take away from No Limit or knock them for is the business model they set up. I wouldn't say they opened the floodgates for The South, but it helped pave the way for labels like CMR (their deal with Universal) and Hypnotize Minds in breaking through the mainstream.
That being said, YES, OutKast was ground breaking. Before them there was the Geto Boys, 2Live Crew, Eightball & MJG, UGK, and a plethora of bass artists. Kast opened ears up to different aspects of Southern music showing that you could be lyrical, but creative with it as well. They made people pay attention to The South who otherwise slept and just wrote Southern acts off as gimmicks. Even now, when Southern music is discussed, OutKast still belongs to a small circle of Southern artists won't get you laughed at if you mention them among greats.
That being said, YES, OutKast was ground breaking. Before them there was the Geto Boys, 2Live Crew, Eightball & MJG, UGK, and a plethora of bass artists. Kast opened ears up to different aspects of Southern music showing that you could be lyrical, but creative with it as well. They made people pay attention to The South who otherwise slept and just wrote Southern acts off as gimmicks. Even now, when Southern music is discussed, OutKast still belongs to a small circle of Southern artists won't get you laughed at if you mention them among greats.