I don’t know of any here with the same active ingredients. There are a lot of other antibacterial pet shampoos though. Perhaps one containing chlorhexidine (like pyohex) may be useful? You might want ask vet if that one is suitable for rabbit skin though. Another common product here is Blackmore’s Paws shampoo & conditioner. I use this for the dog.

Im a fan of products containing manuka honey or Grapefruit seed extract (GSE). I did come across a treatment shampoo guide just using a gentle pet shampoo and adding the GSE to that. I have a bottle of concentrated GSE that is glycerin based and you can add drops to just about anything.It lasts a long time.

The main thing Ive seen help is a sanitary shave so that the skin stays dry. I once was looking after a rabbit ( was estimated to be 12 but I couldn’t verify) and her back end was completely urine soaked. I actually thought she had a broken tail it was so weighed down with sodden fur.
After the 1st wash, a lot of the fur just fell away from her tail and then it was obvious she could actually lift it.
We gave her fur a shave and I applied barrier cream to further protect her skin and she stayed so much cleaner. Her skin really improved after that.

ETA: Are you a member of any Aus-based online rabbit groups? If not, some of our other Aus BB members may be and be able to ask about shampoos on your behalf.