The Cudy X6 is a very new product that just became available on Amazon. It is an MT7621 architecture router supporting AX1800. The router runs on a custom build of 21.02.1 OpenWrt and the manufacturer's website provides a .dts file as well an excel spreadsheet laying out the gpio.
Here is the product listing:
This is the download site for their custom openwrt build:
I tried to use the firmware from the link above but I ran into trouble trying to install wpad-wolfssl. The wireless configuration doesn't support WPA3 and I was unable to set up an 802.11s mesh network.
I'm hoping that with official support, it can be upgraded to the latest kernel that might have better support.