I work for Aussies for over 6 years now and have always marveled at the diversity of ethnic background.
One of my boss is as you say the surfer type, big, muscular, blonde hair and blue eyes,
Another one is of Greek descent and the other of Malta.
MOst other nationalities when they hear Aussie they thing of Chris Hemsworth or Hugh Jackman.
I have always loved the humor of Aussies and they always exuded a youth vibrant energy even if they are near their 50s.
One of them still plays volleyball and just slams the competition.
It is how young your brain says.
I am a bout 30 but often mistaken for 25. Although I credit that to my Asian heritage and Rick and Morty cartoons hahaha.
lol. I think my Monty Python references reveal too much ;)