Boost slightly from 5kHz and up . This adds "air" and makes the lyrics easier to understand.
In FL Studio, right-click any mixer track, go to , and select your new J. Cole preset. j cole vocal preset fl studio
To build a preset, it helps to know the source. Cole reportedly uses a (legendary tube mic) or a Neumann U87 into an Neve 1073 preamp. Boost slightly from 5kHz and up