Hi, I don't find Wratten 94 listed in Kodak's filter handbook (1990), so it's questionable if you'll find any curves for it.
You mentioned the blue channel in color densitometers. There are two main responses, called status A and status M. The status A blue response is centered on roughly 440 nm. The status M blue response is centered on roughly 450 nm. Both have a fairly narrow response, roughly on the order of 40 nm spectral width.
Offhand, I don't have any idea which would be better for your purposes.