Which RKO film is owned by Fox?
Which Universal/RKO titles were sold to Gold Key/Blair/Warner?
Also for the Turner/RKO thingy, the information said United Artists had the rights to the RKO library, i have not recalled any older (60's-80's maybe) prints of RKO films that have any involvement with UA (or MGM who merged with UA in 1981).
Oh and over in the UK Universal had the rights to the RKO Library but when a new Blu Ray of Citizen Kane last year came out in the UK, it was Warner so could Warner have gotten the UK rights from Universal? Also I think Warner has France and German rights to the RKO Library recently acquired.
For the MGM/Rank, i am wondering which titles MGM owns of Rank because Samuel Goldwyn acquired 400-something titles of Rank for US (and maybe for US Canadians) back in the '90s