One of my routers came with OpenWRT, so it's certainly possible to get routers that use it as 1st party firmware.
As for routers with random vendor firmware, I'm not familiar enough with all of the vendors out there to give an authoritative answer but I've seen or helped with plenty of routers that support many of the things on your list.
As for routers with random vendor firmware, I'm not familiar enough with all of the vendors out there to give an authoritative answer but I've seen or helped with plenty of routers that support many of the things on your list.