Epigraph and commentary as credits

For now crew submission guidelines doesn't mention what to with things like epigraphs and commentaries used in the title. The former is pretty straightforward. Epigraphs are quotations used usually at the beginning of the work. They're not exactly writing credits, since only a small portion of the text used which fits into 'fair use' more often than not. Usually quotation authorship in the epigraph is given after the quote and is a full name. Here is an example of an epigraph: a quotation by Andrei Tarkovsky at the beginning of every episode of "Zona" TV series.  
 
Logically, this is a credit. So years ago I added it to Micellaneous Crew section, as "epigraph" (on a series level; that should be upgraded to episode level as well, as epigraph preceeds every episode). So far this credit seem to be in use in 9 instances, most of which I added myself, I believe. However, this option was available when I first used it. In many instances epigraphs only go to Crazy Credits which, I believe is not a correct solution. Nor do they really fit in special thanks. I would argue that both are exactly what Other/Miscellaneous Crew section is reserved for with little tie-ins to other departments.  

A similar case is a contextual use of commentaries, widespread through web-series, live streams and other new media. Commentaries are either read (with oral credit) before being answered or depicted onscreen. Often both. There are 110 instances of that being listed on IMDb with two different formulations (there might be more with different formulations).
 
The question is: am I doing it right? If so, I should probably do more of that. For example Subway (1985) begins with three different epigraphs, none of which are listed/covered properly on IMDb so far.