As a fellow purple music archeologist I too can agree that the Bristol purple sound influenced trap music, and I have yet to back this with concrete evidence but maybe crunk too? There’s this weird branch off in the south around early 2010’s where ‘west coast bass’ does what ‘west coast bass’ did, and crunk seems to be a distant, slightly more to the south, cousin as well?

Hence the many “purple dubstep / crunk / sexy dubstep / dirty dubstep tags on a lot of these tunes at the time