The heavy one works very well, that one is done.
The medium one is a bit too poppy. Give it a few more frames for the up and down. Especially for the last bounce on x38 (if your anim starts at x1). It's too high to just drop down over one frame.
The light ball is going into the right direction, but needs a bit more work. The initial drop needs more acceleration towards the end. The bounces after that are better but from x228 and on it starts to feel very slow and even. Add a little acceleration to the drop for the rest of the bounces.