There are 2 repositories under kicad-templates topic.
Provides a number of additional Board and production house templates for KiCad
KiCAD Templates to design a mechanical keyboard with multiple MCU's included.
Kicad footprints and templates for SSD1306 128x64px OLED
Templates for KiCAD
a series of Schematic & PCB Layout Cases base on KiCad 6.0 .
KiCAD symbols and footprints for semiconductors from GDR
KiCad template to create a PCB for a SUPERTRONIC PP42WS housing
KiCad templates for various types of boards, e.g. mini PCI express