Thanks, much appreciated. Some of those look like what I'm aiming for. The Midge and mustache bars probably won't work for me, at least not with that brake lever configuration. Besides the back and neck issues I also have occasional bouts of arthritis pain in the wrists and hands that make odd control positions uncomfortable. I'd need the brake levers to fall naturally under my hands and fingers, with a good grip rather than bar tape.

And I see a familiar, inexpensive and friendly bit of gear -- the Sunrace friction shifters. I got a set a couple of months ago intended it as a temporary fix for a glitchy Shimano RapidFire thumb shifter for my 1992 mountain bike's front derailer. It kept skipping over the middle ring on downshifts and I got tire of disassembling and cleaning it. But the Sunrace thumby turned out to be so functional and easy to use for dialing out chain rub I'm in no hurry to replace the original RapidFire shifter.

The Globe Carmel shown above came with Shimano Revoshift twisty grip shifters, and I have a spare new set, but I may eventually switch it to the Sunrace friction thumbies too.