Jhxc
JHXC was a prominent and prolific sequence musician between 2014 and 2019, having created music that was very impressive for the limitations of the sequencer at the time, and that still holds up today.
His most well known sequences include, Zenithbound, Real Dubstep, and There May be Sharks. He is no longer active here but is rather successful on YouTube under the alias JHXC and JHXC64.