What is this tool thread?

Let alone stumping the Toolman here, hemi71x is stumped what these tools are for.

Anyone know?

Two of them (on the left) are Miller Special Tools for the Chrysler Corporation line of cars, in auto repair, but have been in my collection for decades.

Miller C-4836

Miller-7914
J-3465-1A

Thank's.
Jim V.
hemi71x

Anyone know anything about the 2 tools on the right?