Right, Civ - but I don’t buy into the traditional approved time lines.
The Sphinx head (at least) was recarved during the New Kingdom, and temples in front of the Sphinx were built of stone quarried out that basically created the Sphinx enclosure. The temples were refaced in perhaps Old Kingdom times, although one of the refacing stones was salvaged from something of OK date, as there’s part of an inscription on it, so it may have been refaced in Middle Kdm or New Kdm times.
The pyramids were built in order by the late 4th dynasty pharaohs, and there’s quite a lot known considering the attrition of written records over even that span of time.