Well seeing how we don't know that the - at least 8 email chains that contained “information that was top secret at the time they were sent.” (Comeys words) - contained, and no one has seen fit to release that info, I'm going to assume that its not for public consumption and could have the potential to cause issues down the road. If you want to believe they do not......
Comey's words
classified at the confidential level, which is the lowest level of classification.
Top secret info I believe resides on a separate system. When I read this it sounded more like sensitive information but not "danger to national security" stuff, that's why it was being discussed by career employees so freely over emails. Again, not given Hilary a pass, but our government over-classifies a lot of information.