With your skills, I bet you could make your own blades!
Imagine all the experiments you could do, on length, width of working surface, profile, height, tilt, and toe pick shapes!
After all, it doesn't make sense that any one blade should work for everyone's anatomy, range of motion, and desired skills.
Your initial experiments could be done on relatively soft skill, that cuts easily. Then you use a propane torch to temper harder steel, cut it, then re-harden it. (I'm assuming it is hard to find cutting tools that will cut roughly 60+ hardness steel, but maybe it isn't?)
Or - maybe you can buy a laser cutter?