The Jones loop bars come in 666 and 710 CM widths which are quite wide.
The Surly bars are about 660 CM at the widest and narrow as they go forward.
I am currently running the Velo Orange Casey's Crazy Bars which are about 660 at the widest.
Casey's Crazy Bar, Alloy, Noir - Handlebars - Components
These have many hand positions which are pretty neat in real usage.
So far I like these best , just slightly more than the Surlys.
Another possible thing to try , I did this to mine , is run a slightly shorter stem.
My stock stem was a 115mm 15 degree and I changed to a 90mm 15 degree to pull the bars a bit closer.
This changes the weight on your wrists and brings the spine up slightly , maybe a better position for you.
I have dialed my fit over about 900 miles of riding and just have to get the numb hands a little less numb.
I used to be 5'9" but spinal problems have shortened me to 5'6" , but my arms and legs are the same as they were.
Keep at it , you'll get it right after some fiddling with a few tweaks.
Mick