Absolute Black
http://absoluteblack.cc/aero-sram-direct-mount-oval-criterium-chainring/
Sram (obviously, anything from low cross gear to 52/53/54 I believe)
https://www.sram.com/sram/road/products/sram-force-1-crankset
I keep hearing Rotor has a narrow-wide-Q ring, which sounds perfect but can’t seem to find it
.