Jig for making jumper leads?
What you're looking for is a sort of lead forming tool. The most common such tools don't strip wire, as they're usually used for components such as resistors.

The usual hobbyist version I've seen is a plastic device having a series of grooves in 0.1" increments. Perhaps you could use one of those as a cutting-and-stripping guide before bending.

Googling around, the CM-01 on this page claims to be able to form insulated jumpers and isn't obviously overkill, but I didn't find a price.

I also found various hand tools which automatically cut and bend, or just bend, to an adjustable width, but that would probably make stripping the short ends difficult. I also found high-priced fully-automatic jumper forming machines.

Perhaps a little more research starting with these keywords might turn up something useful.