Looking on Amazon there is the Deco X20 which says it has wired backhaul. Wouldn't this give me what I'm looking for? TP-Link Deco WiFi 6 Mesh System(Deco X20) - Covers up to 5800 Sq.Ft. , Replaces...

@Carl If we don't have a wired extender can I setup a wired access point with the second router but have a shared SSID and mesh between the two devices? I have an AX21 and a A6.

I have an Archer AX21 V1.20 firmware 1.3.2. I'm trying to find a OneMesh wired remote booster. I have ethernet running to the remote room as I have a few clients in that room off of a hub.