Is there a statement, in general, that can be made regarding the "hardness" of the steel
used by various razor manufacturers?

For example, is Sheffield steel "softer" than Solingen steel?

Is it possible to grade the hardness/softness of the various manufacturers in a sort of
linear fashion, ie softest to hardest?

Of course there are variations (by lot, by date of manufacture, etc), but I'm wondering
if there is a general guideline.

Thanks in advance.

Paul