The base is original from the producer (chords and melodies), but is complemented with elements that complement the song that come from samplepacks, usually, vocal chops, guitars, wobbles sections, glitch effects. It is the standard in which most of producers work, in a project you will find MIDI files made by the producer, but also melodic loops.
A combination of Trap - Drill and Pop
Another take on Drill, with the use of the same sounds but with a twist of Pop rhythmic and a genuine electric guitar.
Sample pack Snow In The 6ix
Loop name SIT_140_vocal_dolla_dolla_Cm