A skate friend from the early 2000s, James Anderson. Date on the vid says 2009, really came out around 2005, but the footage itself is 2000-2002. Some of these tricks are definitely ahead of their time.
He was flow for Blind, and literally never showed them footage, despite having most of this already filmed. They kicked him off, and instead of just showing them what he had, he just moved on with life, and skated for fun.
warning: there's a compound fracture in the video of some random dude.
Friend from Mexico City. It's from 2007, so excuse the ledge dancing.
FYI that the video premiered 1 day before Fully Flared, so I'll say that Koston's ender was ABD. He's had a ton of parts since then, but most are in Mexican videos you probably haven't seen. Check youtube.
Another friend, Chris Jatoft. The part was on Thrasher, so not sure if that makes him "unknown" or not. Maybe he wouldn't be mainstream pro, but I could see him being pro for Heroin or some brand like that.