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.
In this project i used Serum, Operator, Sylenth1, Ozone 8
Sample pack https://www.loopmasters.com/genres/50-Deep-House/products/12756-Middle-East-Deep-House
Loop name MDH_120_Am_Jasmine_Oud_String_1