Redactions within some of the recently declassified Congressional documents (for example here) are entirely reasonable efforts to protect national security as provided by the Executive Order 13526. However, EO 13526 may not be directly applicable to legislative activities.
So, are there any written rules regarding Congressional documents specifically in regards to the names of authors ?
I offer this seemingly innocuous research report example: Not only is the author's name redacted but also the names of people that were acknowledged as helping prepare this report. This report appears to be a civics lesson explaining the legislative process, so I suspect that the subject matter itself is not sensitive.