I can’t say where it came from but it’s definitely become pretty common handlebars targeted towards gravel.
I noticed sql lab came out with a new handlebar for gravel and it surprised me listing a 90mm reach. Thr other interestinf aspect is thr bars have a front sweep rather than a seemingly more common backsweep.
https://sqlab-usa.com/collections/handlebars/products/handlebar-314
I’m always in search of a goldilocks handlebar