I went back through most of AB1 anns, and came up with a list of companies that AB1 says are their subsidiaries here:
Post # 38509081
Hmmm, not sure if that is how to insert a previous post?
Maybe this https://hotcopper.com.au/posts/38509081/single
I do mention that I am not 100% certain if it is accurate, by all means add to the list if I have missed any!
Anyhow Cheers! DYOR, AIMO etc