Raw e-ink panels without PCB, SPI driver-board modules, Raspberry Pi HATs, 91-segment numeric displays, NFC-powered tags and an HDMI e-paper monitor all share this family. Who drives the panel is the first question.
Waveshare makes up the large majority of parts here and often sells the same panel twice: once as a raw display needing a separate driver board, and once as a module or HAT+ with the SPI controller attached.