In Australia, 'Joe Blow' and 'Joe Bloggs' are common vernacular, 'John Citizen' is used in advertising and such (say on a pic of credit card, etc), but I've never heard of the others listed.

People in and out of public life innocently say things all the time that later get misconstrued by activists with agendas. But we're all human, and should lighten up; - unless of course someone really intends to be discriminatory. Instead, we should all be mature enough to know the difference.