Ronan Farrow has a story in the New Yorker about the supposed whistleblower who leaked Michael Cohen's financial information. Let's remember that the first person to come out with the info was Stormy Daniels' lawyer, not a member of the press. Presumably, the leaker went there first. But even if the leaker went to the media first, this is not the behavior of a whistleblower.
There are active investigations. There is a Special Counsel named Bob Mueller who the leaker presumably heard of. There is also the U.S. Attorney for the Southern District of New York.
The leaker, given a position to be able to check on the supposedly missing documents would have been high enough inside the government to have credibility with both organizations. A whistleblower would have gone to either of those if the person was concerned either entity might not have access to the documents.
Running to the press and/or Stormy Daniels lawyer makes it clear this person is an active member of L'Resistance who wants to undermine the President and believes the President and his friends are up to nefarious purposes.
Also, if you read carefully, it is pretty clear one reason the documents may have disappeared from the system is because the Mueller investigators wanted them gone so no one could leak them.
But the leaker did it anyway. It reminds me of L'Resistance member in Augusta, GA who pulled national security documents and leaked them because she wanted to expose the President. She's going to jail, and this leaker should go to jail too.
Stepping forward to claim whistleblower status is just an act of pre-emptive spin to get media sympathy. But a whistleblower would have gone to Mueller, not a porn star's lawyer or the press.