Looking for help to match my old 4th ed dark gray Wolves paint recipe

I’ve been googling for a while now and I’m looking for help trying to match my old 3rd - 4th ed Wolves paint scheme.

I sadly don’t remember the colors used now as I lost all my old notes! I know it’s based around a Vallejo model color neutral gray and a wash that I mixed myself from Future floor polish. The problem is that it was hard to touch up after a mistake because the heavy wash would need to reapplied and it would look like a mess after.

I’m looking for a way to get a nice dark gray like these maybe relying less on a full model filter wash to achieve it. Does anyone have recipes that would come close to this? Oil or enamel washes welcome I just don’t want a color that will be hard to touch up like a full acrylic wash like these are if that makes sense.

Any help very welcome!