I don't know, the GIFs don't really show much.
The first GIF is a normal spray, he notices the guy behind and sprays towards him as well.. he spray transfers, watching semi-pro CSGO players and they do this all the time, once you have your muscle memory spot on it isn't even close to hard to do.
2nd one is pretty simple to explain, tick rate, watch a low tick demo and you'll see this happen all the time, the only suspicious thing is the lock on to the face but come on really? Good muscle memory = good aim.
I don't see anything in the 3rd GIF at all, it's just a casual flick..