Aero Chord has been known to use Sylenth1 , Nexus, and Massive.
You can find Aero Chord - Surface MIDI files to study the melody and chord structure. Aero Chord - Surface
Search for "Aero Chord Trap Stab tutorial" on YouTube or Reddit to find specific Serum or Sylenth1 patches. Aero Chord has been known to use Sylenth1
Distorted, long-decay 808s that fill the sub-frequencies during the drop. Aero Chord - Surface
Typically created using multi-voice detuned saws with a fast pitch envelope to create a "punchy" attack.