Diverse West Coast production
Due in part to the fact that Los Angeles is one of the two capitals of the the entertainment industry, it is home to the highest density of top-notch hip hop producers of any city in the world. Sorry, Atlanta.
You have the Aftermath set (Dre, DJ Khalil, Focus..., Dem Jointz), the Brainfeeder/TDE set (Flying Lotus, Thundercat, Terrace Martin, Sounwave and the rest of Digi+Phonics), and Ty Dolla $ign's D.R.U.G.S. set (Ty, Chordz 3D, Nate 3D, several more). You have DJ Dahi, DJ Quik, Battlecat, Alchemist, Madlib... the list goes on.
DJ Mustard produced nearly all of My Krazy Life, and judging from YG's recent releases, he's angling slightly more in the direction of G-funk on his sophomore album. Which is 100% fine -- we only hope he utilizes as much of his hometown's production talent as possible.