I2C backpack displays, SPI dot-matrix modules, bare seven-segment clocks, addressable NeoPixel grids, HUB75 RGB panels and phosphor VFDs all count as LED displays. The driver story is different for each.
Adafruit HT16K33 backpacks, MAX7219 daisy-chains, NeoPixel and DotStar grids, HUB75 RGB matrix panels, charlieplexed arrays, bare clock displays, and two VFD character modules — almost 90 parts, none wired the same way.