
Yes, your pattern of wrench are called ”Stillsons”. Years back the design was actually licensed, which is why they all look so similar. As part of the deal I think that the wrenches had to meet certain standards, so these “genuine” Stillsons have lasted well.
In the U.K. the other pattern were called “Leader”
I assumed that this was a name unique to Record, who were one of the major makers of this tool in the U.K. I doubt if Record invented this pattern, as I have U.S. made tools of my Grandfathers which predate any Record tool, but the term became common here.