New here to the forum, but it a few things jump out.
It looks like your balance might be off, might be a product of the crow hop. But it looks like your lining up to air it out like a football, but throwing a baseball. This probably gives a more rainbow effect of your throw.
I'd recommend, personally, always having a glove on the non throwing hand. This is my own personal preference, but without it I have always felt awkward.
Instead of focusing on the crow hop through, which can provide gains, I'd stay stationary and work on a "from the stretch" throw.
Throwing a baseball well also takes alot of flexibility. Work on stretching, elongating the muscles.
The last video, as seems to show a slight hitch, and opening of the hip. I'd try to get you front foot on a straight path.