I know it's a tad late, but If I could add some advice it would be on your set up, what really jumped out to me is the bar relative to your foot position. In the first video the bar is too far forward on your foot, if you look at the path of the bar, you lift it, then pull it in towards your body. The second and third videos are a lot better, but the bar is pressed right against your shins and when you go through the set up you are rolling the bar forward, which is better than starting with it way too forward but if you overroll the bar it results in the same thing. Especially with heavier weights it will change the initial dynamics of the lift.
It's something you want to consider and will help you keep the bar in a straight path along your legs more easily.