It seems I have a click stop or 2 but cant even remember what it is or does.
In the collection of first pic it looks like the 2 units on each end of the spectrum come from the same die.
As working units I don't discriminate, all of them have proved well. I believe the cheaper ones started out with the intent of being used in equipment tool boxes and they worked so well no one pay any attn. and they blended.
These tend to get circulated here and I must have 10 brands of 8 inch. I see Sears isn't there I might have SK, a Crecent and a Diamond and a couple re branded Proto and the ATD are not in that pic.
The cost of mfg has changed and its rare to find a really poor adjustable anymore. Probably at a flea maybe, from India, stamped possibly but its such a common standard its easier to make them all,,, or most of them the same and spend your time trying to upsell brands.
There are a couple knockoffs they havnt perfected yet, the Vise Grip and the 440 Channelock as well as a couple of the wiring pliers. It must be so tempting for an engineer think they gonna outsmart the old fart that invented them, they fiddle with it a bit and its gone. Even Channelocks own attempts at this are less than stellar, I got 4 pairs of special "improved" jaws I would trade for 2 old timers.
I havnt used every one they ever invented but I suspect there are none much better, certainly at the cost than the trade proven models.