In the very first pitch of your first video, this is what jumped out at me…
You stride and plant your front foot to your throwing arm side, your front foot is opened up to point to your glove side, your front lower leg is tilted to your glove side, and your upper half leans to your glove side.
So, imagine a line running from the center of the rubber to the center of home plate (the white line on the court in your videos). You start on the centerline and stride away from it to the throwing arm side. Then your body has to “turn the corner” to square up to and get everything going back to the target. To help, you shift your posture (tilt your torso). Late posture shifts misdirects energy because some of your body weight ends up going in a slightly different direction than your arm is trying to throw. It also pulls your release point back.
Now imagine starting on the glove side of the rubber and striding towards the centerline. In this case, the “corner” you have to turn to get squared up will be smaller. This should reduce or eliminate the late posture shift which, in turn, should direct all of your energy going in the same direction. And it should let your release point move forward.