The problem they have is that they were witnesses to normal government operations, and they simply didn't like the policy direction of the Trump administration. That's why the whole thing has taken such a comical turn. There is no "whistleblower" because there was nothing to report, and the Trump administration verified this by releasing the transcript of the call to show that it had nothing to hide.
Only one official complaint has been filed with the Intelligence Community IG. The submitter is known to the IG, his attorney, Mark Zaid and Adam Schiff and everyone in Washington including Uber drivers. His complaint does not meet the requirements of the relevant statute. He is real and his name is Eric Ciaramella. There are other so called “whistleblowers” out there, and the May fit your description.