MediaWiki language fallback languages chains. Languages that fall back only to English are not included.
<a href="//commons.wikimedia.org/wiki/User:Nikerabbit" title="User:Nikerabbit">Nikerabbit</a>
CC BY-SA 3.0
Own work  using: yED (Circular with BCC Isolated layout) and fallback-graph.php of Translate.