Some of my early morning run friends swear by their noxgear tracer.

https://www.noxgear.com/tracer2

Yup. I've had one for 5(?) years. I like the rainbow rapid-strobe light/epilepsy mode.

Just another vote for the noxgear, their newer version is rechargeable. It works well and hardly I notice wearing it.

I’ve been wearing a vest from proviz the last few years. Want to get a thicker version so I can use it more in the winter. But love the one I have for my early morning runs.

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For what it's worth, driving to work while it's dark I regularly see a a runner wearing noxgear. Have to say I always feel uncomfortable seeing them. The ropes put out a very dim light and I can't really tell what I'm looking at until I'm very close, and remember it's that runner. It doesn't register as a human shape, or someone running. Maybe if I saw them from the back and saw the lighted battery pod it'd be better, but they're always running toward me so all I can see is the two dim light cords.I feel like they'd be a lot more visible with an actual headlamp or waist light bobbing up and down, combined with a reflective vest like illuminite or whatever. (Fortunately they run on the sidewalk.)