Jimmy, maybe I don't understand what "Fuzz" is for me, but every fuzz pedal has been extreme distortion / night and day difference between light natural tube saturation OD as those examples you list tend to be what I would call a vintage tone, back then they didn't go out of their way to stay dirty, it's just how the tone came out with the tech and limitations they worked with (with few exceptions on later Entwistle stuff which I wasn't a huge fan of his tone then anyway).
What I "thought" the OP is asking about, Fuzz, which is this..
He was asking about all types of distortion, not just fuzz. Fuzz is an acquired taste for sure. However, I've acquired it and I'd like to think my fuzz sounds are better than that. Probably not
As for the limitations on vintage gear, I can easily take vintage amps and get clean sounds out of them, so I believe there was choice involved, and I know for a fact that choice was involved with Jamerson...that was his MO...turn bass way up, keep treble medium, then crank that puppy.