Great work, thanks for sharing! Regarding alternative names for the "snake arm", I've seen/heard it referred to as a "drape". At least, Logan Stieber calls it so. In this case would be a collar tie drape. I've seen him teach it as an inside tie drape in one of his videos, when the opponent takes an inside biceps tie.
Sidakov is a GOD!!!! The guy beat Kyle Dake so easily it was like watching a middle school wrestler go head to head against a collegiate athlete. The difference in skill and speed are night and day. Sidakov reminds us of a younger faster Jordan Burroughs.
I’m seeing more and more people go down to both knees when shooting the high crotch. Sidakov does it here and then ends up in his crackdown, but I’ve seen Spencer Lee do it and then pressure in and finish like a normal high crotch. Is going down to both knees on the high c the new best technique?
I don't see any advantage finish-wise to go to both knees. I think it's happening due to the defensive wrestler putting weight into the opponent's head or the offensive wrestler needing to cover just a little more distance on their penetration.