I don’t have all the information yet, but I just noticed that Ruby was the most popular baby girl name in Victoria, Queensland and Western Australia last year. These are the 2nd, 3rd and 4th largest Australian states in terms of population.
In the most populous state, New South Wales, Ruby ranked 4th.
P.S. Did you know that Victoria’s top 100 names going back to 1929 are online? The #1 girl names before Ruby were Margaret, Susan, Jennifer, Michelle, Rebecca, Sarah, Jessica, Emily, Olivia and Mia.