Hey - I was recently listening to Tosin a lot and looking into his technique, a friend of mine suggested this video and it’s been super useful for thinking about these hammer on out of nowhere + double picked patterns so I searched here and didn’t fine much in the way of selective picking discussion and though I’d post it.
All of these pretty much work well with a single escape motion and the concept can be combined with small legato runs followed by Yngwie-like economy, double picked stuff, really whatever. End of the day it’s about coordinating combos of palm muted hammer-ons out of nowhere with relatively low effort picking to create this rhythmic wall of sound.