This is the standard that most of producers work on. In these type of projects the base is original from the producer — chords, melodies, leads, etc — but it contains additional melodic elements that complement the track and come from royalty-free sample packs. They are usually vocal chops, real instrument chords or textures, wobbles basses, glitch effects, etc. In a project file of this category you will find MIDI files created by the producer, but also melodic loops
3 leads are made with Serum and Nexus VST. I've also used arp loop and vocal from a sample pack.
Sample pack Black Octopus Sound - Dark Heavy Techno
Loop name BOS_DHT_130_Synth_Loop_Arp_Acid_G