To your first point, I don't care if it was first or not, the important thing is the iconic status in association with the character and franchise, but If you care, there was a James Bond TV film preceding the Monty Norman theme, and there was also a Godzilla radio serial which, while made to promote the upcoming movie, did not use the Ifukube theme.
I think that's a very weak attempt at an analogy, since in each case that's a single obscure production, whereas Superman had many quite famous screen productions in the 37 years before the Donner movie, including an animated short series, an extremely popular and long-running radio series, two theatrical serials, and a popular and successful television series -- most of which had their own distinct musical themes (though the radio series adopted the Timberg theme), two of which became so associated with Superman that Williams's theme was a tribute to them.
See, this is the problem. People today have forgotten how much history Superman had before the Donner film. If anything, Superman had a much larger and more influential cultural footprint in the 1940s-50s than he's had since 1978, since he's been largely eclipsed since then by Batman and eventually by Marvel. People today think of the film as the iconic original, but the Donner film itself was a nostalgic tribute to Superman's history, as the opening moments of the film make clear.
Anyway, the Barry Nelson
Casino Royale adaptation was not a TV film, but the third episode of
Climax!, an anthology series that was generally performed live. The only title theme it had was the theme to
Climax! And since the Godzilla serial was made to promote the movie, that makes it an offshoot of the movie rather than an independent prior work. You might as well say that
Star Wars was a sequel to its novelization because the novelization came out a month or so before the film's release.
