Yes, agreed AJB Temple!
There were more different heads/drives in that Wiki article than I - and I guess many others - knew about.
One way and another I have a fair collection of drivers of all sorts collected over the years (most are on a "just in case"/"you never know" basis), again as I guess many of us have. But I found that illustrated list truly mind-boggling!
And thanks to whoever posted those links too.
But I won't try nailing my lathe back together.