I've never noticed any that were the same diameter all throughout the tube except for ones that are smaller diameters. But likely just me. I know they might be out there.
Specialized makes some nice drop bars too that fall within your other specs. And in price ranges from 40 to 250 USD.
https://www.specialized.com/us/en/sh...e:Drop$2520Bar
Though they all may be in that freighter tying up traffic in the Suez Canal.
