I think these two explain Gucci's influence pretty well. The first one is a very tight East Coast style beat but as someone said earlier about Southern rappers; it's not that he's off beat the beat is off Gucci. Drawling and bending words.
Second one has more of that electro style. The lollipop school of bangers I guess. Think it's indicative of where things were going.
Someone should do an expose of Lil B I think he's probably the biggest influence of the 2010s as far as rap is concerned. Arguably the first proper meme rapper but I was never a huge fan.