Pretty much all that stuff is out of print at this point (and so is going for lots of money on ebay I’m sure).
Putting a “Legends” banner on the OOT would be like putting a “Legends” banner on the novelizations of the first six films, which they aren’t doing.
Not to mention Pablo Hidalgo’s twitter exchange where someone asked if the OOT is still canon except where the SE contradicts and he said “I guess. It’s never really come up.”