Not a violation of the username policy. Real names are permitted except when they imply that the editor is a specific living person they are not. Consider filing a report at the conflict of interest noticeboard.
Not a violation of the username policy. Stage names and pen names are permitted except when they imply that the editor is a specific living person they are not. Consider filing a report at the conflict of interest noticeboard.
Not a blatant violation of the username policy. Please discuss this with the user first, and consider opening a community discussion at RFCN if they disagree with your concerns.
Not a blatant violation of the username policy. For a username to be blatantly promotional, there must be a link between the username and the user's edits. Consider re-reporting if a connection becomes clear through the user's edits.