Are you able to get most blades to the same level of sharpness (excluding junk blades) or do you have some that you can just never get as sharp as some others?

I can shave with all of my blades but I have a few that I can just never get as sharp as most of the rest of my blades.

It's mainly just smaller blades and one 6/8 Henkel although I can shave with them all.

It must just be something that I'm missing on a few of my blades but I guess it's possible that some blades are just harder to hone than others.

I don't know what differences there are in the various steels used in vintage blades and thus the reason for my question.