You might want to check out Soma, too.

https://www.somafab.com/parts/handlebar

The Whiskey Scully is another option. It's available in aluminum or carbon.

https://www.universalcycles.com/shop...?category=4616

I use an Answer 20/20 carbon bar on one of my bikes, but that one isn't sold anymore. Answer was absorbed by Hayes, and Hayes shifted the name to ProTaper. Looks like there's a ProTaper 20/20 carbon bar, but it appears to have been discontinued.