And I'll throw in yet another idea for a different handlebar style. I have a butterfly bar on my '97 Trek. It's often called a "trekking bar". I have it double-wrapped and it's pretty comfortable. You can hold it like a wide steering wheel, or near the "bottom flats" where the brake levers are, or at the bottom corners (or top corners). I will often ride it with my palms extended flat on the lower corners, like we used to do hand prints in grade school. It's very comfortable and offers a lot of hand positions. Most of this style bar, to my knowledge, uses the 22.2mm diameter size, compatible with flat bar/MTB style controls, so it would require a different type of brake lever. I use short-pull MTB levers with mine (compatible with your caliper brakes).

IMG_20190919_183831811_HDR by jnjadcock, on Flickr

IMG_20190919_183819644_HDR by jnjadcock, on Flickr