'City Bike' Handlbars... They have varying degrees of backsweep.. You'll see the basic shape on many E-bikes intended for general road use...
Because of the higher amount of backsweep, the 'width' is usually much narrower than many flatbars - usually 620 to 640 width, as opposed to 700+ for mtb type flat bars...
I'm currently doing that conversion for a friend who constantly gets numb hands from flat bars. We've worked on posture and different grips, still a problem.
She a woman, and many have narrower shoulders, so wide flat bars are very uncomfortable. She rides non-technical mtb, so bracing and controlling is not an issue.
She never has any problems on her e-City bike, so I've gotten the same bars and will be doing the swap this wkend...
Ride On
Yuri
EDIT: 25.4 bars may be a little more difficult to get - don;t know. I'm going to use a 31.8 bar... If it's a threadless stem, you could get a 31.8 stem to go with whatever bar you decide on...