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> I'm not aware of camera manufacturers publishing details on the wavelengths their sensors respond best to

It is relatively easy to experimentally find this out https://nikongear.net/revival/index.php?topic=10662.0

All that really matters is that the red and blue wavelengths are far out enough to not overlap with the magenta dye layer on the film or the green channel on the camera sensor.

Yes, you do actually need to do this. You basically need to calibrate every sensor to ensure that the correct wavelength of light ends up in the right channel.