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.
The lead was made using Serum, with a signature rhythm that made the Future Rave style.
The Guitar in the break is a KSHMR loop sample. It brings the atmosphere of the track.
Sample pack Sounds Of KSHMR Vol.3
Loop name KSHMR_Joombush_07_Melody_115_Em