Have a look at the Facebook developers page: https://developers.facebook.com/docs/reference/opengraph/object-type/article
It looks like your examples 2 and 3 have incorrect formatting. None of the “article” properties should begin with “og:”
Here’s what I have on one of my sites, and I get no errors from the FB debugger:
<meta property='og:type' content="article" />
<meta property='article:author' content="https://www.facebook.com/YOUR-NAME" />
<meta property='article:publisher' content="https://www.facebook.com/YOUR-PAGE" />
<meta property='og:site_name' content="YOUR-SITE-NAME" />