How come hacker's like Anonymous and other's put out a huge list of who or what corporations that are funding politicians? Kind of like the Epstein Files TM for all politician no matter what side

They did no one cared. Google panama papers.

Opensecrets.org has been around for a while. FEC filings are already pretty damning and yet power remains secure. We know who’s paying them, but it’s not illegal and the electorate doesn’t respond to that information. Even if there were a big list of all the dark money it seems like it wouldn’t do much. At least the data is public. Tell your friends.

Edit: and the hacker collective thing is mostly aesthetic. “Anonymous” is even less of a group than antifa.