I doubt there are any websites out there, and I'm not really sure what purpose it would serve.
my suggestion is to look for a line change of 15 cents or more at one time. not a line that moved 20 or cents in one direction or the other, but a line that at noon that was - 115 or something and then 5 minutes later with no -116,117, etc. goes straight to -135 or something. No individual action will move a line like that.
Even then you will miss some of the games where the pitchers are comparable and the line doesn't change much when it reopens.
you need a tracker and database for this, but i'm sure i.e can walk you how to find it in the bestbettor archive if there is such a thing for this
gl