It's possible that "Blaze Glory" may have just been distributed on 16mm/8mm by United Artists...while MGM owned it.
I think the titles Fox has distribution rights to are: History of the World -- Part I, High Anxiety, Silent Movie, Young Frankenstein, and The Twelve Chairs.
You forgot Robin Hood: Men in Tights.
UA merged with MGM, whose library was then sold to Turner, who was absorbed by WB....
...Who released 'Singles,' which starred Kyra Sedgwick, who's married to KEVIN BACON!
Sorry, thought you were playing Six Degrees there...my bad...