you mean like the alpinist cockpit?
https://rovalcomponents.com/products/alpinist-cockpit
pretty traditional shape, but one piece and accepts at least some internal cabling. not sure if you can get full internal routing through it for two brake hoses and two shift cables. never seen it set up that way.
The Alpinist Cockpit’s round tube shape and tradition bend respect tried and true forms, but the optimized composite layup and internal cable routing are decidedly modern