Here is the weird thing. your load order does not have to do with the issue I've eliminated it as a contributor, because I unsubscribed to all my steam mods but kept them tracked/watched, so I could retrace and reacquire them later. I then also removed all elder scrolls nexus mods as well, so basically I purified my game to the basest of basics, all the way right down to only official Bethesda content only. This means mods are completely unresponsive for this problem. this also means that its an issue on the companies end.
I then tried to figure this out through steam itself and verified my game cache, guess what happened it had to reacquire one file, I thought OK well problem solved right? wrong issue persisted, so I then ran and verified my game cache again same result, so just to be thorough I did it twice IN A ROW BACK TO BACK and found something really odd. It had to reacquire the same file both times and keep in mind this on a pure unmodded version of the game so something steam is doing to the game is deleting the file that is causing the crashes. It does this every time I run the game so I'm completely stumped as to how to fix.