Aside from the WS2801 and WS2811, which use the SPI for receiving data,
http://www.tweaking4all.com/hardware/arduino/arduino-ws2812-led/
there is the WS2812 (which NeoPixels use), and
The APA102 and APA102C:
https://cpldcpu.wordpress.com/2014/08/27/apa102/
Just pasting things in here so I don't forget about them.
