The official M.2 HAT is called M.2 HAT+ promising up to 500 MB/s data transfer to and from NVMe drives attached to it, which can be in 2230 or 2242 form factors.
The official M.2 HAT is called M.2 HAT+ promising up to 500 MB/s data transfer to and from NVMe drives attached to it, which can be in 2230 or 2242 form factors.