How many of those were high ranking federal officials with access to confidential material at the time and have ambitions for running for President?

None of those even begin to reach the level of Clinton's conduct. She conducted ALL communications through the private email. None of the above used private emails exclusive. Most of them don't even sound like they used the private emails the majority of the time.

This is just an attempt at associating a larger issue with a bunch of smaller ones so people will think of it as a minor one.