I know the XM2960 ones would be of use to some. The thing is, aside from finding the right ones for low-res, there's the deal with dealing with mid/high-res games and the fact there's quite a few other things shown in the owner's manual for some timings.
[Edit] Okay, so here we go for the two sets of ranges you gave me. I think we can tweak the second one a little further somehow, if just to ensure proper pixel-double/doublescan modes for games that are between 25KHz-26.5KHz horizontal (like Super Sprint).
crt_range0=15750-16250,45-80,0.900,4.700,8.400,0.062,0.062,0.740,0,0,160,288,0,0
crt_range1=48363-50000,50-61,0.369,2.092,2.462,0.062,0.124,0.600,0,0,768,800,0,0
I can provide a third set of timings just for 30-32.5KHz horizontal if you need it.