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.
Drums and fx-es are samples.
The bass and the instruments/synths are come from Korg M1 and resampled sample.
The project contains a melodic loop from a sample pack. (pizzicato)
Sample pack Sample Magic - Melodic Trap Aesthetics
Loop name mta_kit3_future_full_loop_80_Fm