Board Thread:The Panopticon/@comment-45314928-20200525010944/@comment-6032121-20200525015012

I'd even add that any definition of a companion we might find in a valid source would likely be contradicted by another equally-valid source sooner or later.

That being said, while I don't think there's cause to change our wise policy of not trying to construct a hard definition of companion status, OP also makes a good point about the necessity of adding new companions to the navboxes.