Aite I'll answer the whole Lil Yachty Concrete Boys thing. Them ZeZe generation youngins are suckers for aesthetics more than anything. Basically it's their new version of "swag" for the blog era niggas, and for the 90s folks tight/dope/phat etc.
With the Concrete Boys, them lil niggas not the best rappers, but they pay a ton of Homage to the 90s era while keeping their flow modern/monotone, and effortless (Karaboo is a big component of rap like she ain't trying).
For the new age of rappers, some "cool" aesthetic rappers feel being a try hard lyrical miracle rapper like a Lupe (Im a huge fan of btw) is a corny so they choose to rap like it's no effort. It's basically a updated version of mumble rap.
I just hated auto tune man lol I can work with some artists but when they start sounding like slurred robots shit annoyed me.
But anywho, here is Concrete Boys paying respect to the Master P/Beats by the Pound era. Shit fire to me. These lil niggas was riding on this one. And peep their fashion and director shots of the video. It's all to provide a player vibe without trying. DC2Trill has the most potential from the group IMO