My preference is for wire Jacklines, they only need to be small diameter and have never rolled on them, I have seen webbing lines chafe through in high winds/waves and they are susceptible to UV damage.
You can use dyneema now. That would be better than wire as it'll be stronger, will flatten and easier to see damage.
I used webbing, went to wire, one trip later changed it to dyneema but then went back to webbing. But I gave those to another boat I can't remember so I'll have to make more. I'm going with a soft n floppy dyneema this time.
One thing I do see a lot is jacklines that are good and have huge strength lashed on with tiny often old not enough turns lashings. The number I've seen lashed with a single turn 3mm +/- line is very frightening. The same with lifelines, good lines fixed to the boat with abysmally weak.