Others (Not Tested Yet)

ASUS - Higher-end models (RT-AX86U, RT-AX88U, etc.) with firmware 388.x+ support WireGuard client and server. Their gaming routers are particularly good at it, getting 400-800 Mbps throughput.

TP-Link - Some Archer models (AX55, AX73, and newer) have added WireGuard, but it's firmware-version dependent and varies by region. Not as mature as ASUS.

GL.iNet - These are the darlings of the WireGuard crowd. They run OpenWrt under the hood with a friendly UI on top. Models like the Beryl AX (GL-MT3000, ~$90), Flint 2 (GL-MT6000, ~$190), and the tiny Mango (GL-MT300N, ~$30) all have WireGuard baked in. Very easy setup. The trade-off is they're travel/prosumer devices, not powerhouse home routers.