With a clock line, timing is not dependent on strict delays. High refresh rate, no flicker when filming, stable over long chains.
APA102: 5V, RGB, the classic high-speed addressable LED, also known as "DotStar".
APA107: APA102-compatible, 5V high-speed IC.
SK9822: Domestic Chinese APA102-compatible alternative, available in 5V/12V/24V.
HD107S / HD108: High-speed, high grayscale resolution, used for LED screens / stage lighting / video production.
WS2801: Early SPI IC, 5V/12V, 1 IC controls 1~3 LEDs.
LPD8806: 4-wire SPI, 1 IC controls 2 LEDs, legacy stage lighting solution.
LPD6803: SPI-like / single-wire hybrid, older model.