Kingstop works for me with a few different types of brakes.

I have the Zniino carbon gravel bars and taken them out for a few rides with not issues. One was the initial shake-down on some walkways and through various city areas. The second went on fire road type areas with mild rock gardens. No issues with them in either area. Adding small extenders on the horns/area in front of the brake mounts opens up additional hand positions.  Originally I ordered the 720 width but decided to go smaller. If someone wants the 720s I can make a great deal.

Some videos on reddit of a guy using the bars - and having his dogs along. https://www.reddit.com/r/gravelcycling/comments/wchjbq/bikejoring_two_dogs/

No experience with the finned pads. However, the Kingstop pads have worked well with several different calipers that I tried them on.

Any additional updates? I have a set of 4 pots on the way to try out. Installing a banjo bolt and bleed nipple are on the list of things to test.

Yep - those are the ones.  Amazon often has them for the same price as Ali

I have been looking for something similar as a build.  It sems that this year the integrated carbon stem/bars for gravel are getting wider - 540mm+.  https://www.aliexpress.com/item/2251832866385525.html is a complete gravel frame as a reference.  Lightcarbon, Haideli, and others have a variant on this with a different seat post clamping structure. 

http://chinertown.com/index.php/topic,2837.msg20146.html#msg20146 has a build a few years back which used a non-boost MTB frame.

At the far end on geometry is the Nukeproof Digger.  It isn't Chinese carbon but it provides a good reference point for geometry. https://nukeproof.com/products/2022-digger

Adding an option for external cabling (going in the down tube instead of through stem) would make other handlebars useful.