Thanks for the suggestions, everyone. I'm still trying to hit the mark, though. While some of the suggestions are good in terms of reach, they're so tall (300mm) my bars would be even with my teeth, which, I'm told, is not a good look for me. And the stem adapters -" to 1 1/8", while a good idea, are also either too short or too tall (again, 300mm). If I could find a solution that was in the 225mm range, I would go with that.
Ideally, I'd like a 225mm tall quill stem with 26.0 clamp (my origin8 mustache bars are 26.0, as are the SOMA Portolo bars I'd like to try) and a 40mm, or less, reach. The stem i currently have -- a Nitto Technomic Road Quill Stem: 50mm; 72 Deg 225mm Quill; 1"; 26.0 -- is nearly perfect, if it was a cenimeter shorter or so.
Am I looking for a unicorn? Feels like I'm looking for a unicorn.
Or should I just get an adjustable stem? Would that even work for what I'm trying to accomplish?