So nothing on the designers?
I can't recall all the Holden designers over the years but here goes for those I can recall.
Fred David (Davis?) from FE until the EF (which was canned by GM, who had their Detroit designers do the job. This became the HD). Fred was Australian. He also had designed the EJ which the yanks changed quite a bit before production began. Fred's design was pretty fugly. (Actually, the EF was damned fugly too>)
Joe Schemansky (American) from around the HD/HR period (1965-67) until the HQ (1971)
Leo Pruneau (American)from HJ (?) until the early Commodores.
Phil Zmood (VT - 1997 until ?) Australian
And the most recent one (Mike Pascoe), who designed the Monaro. Now chief designer for GM in the States. (Australian)