If Spectra isn’t what you’re looking for for any reason, here’s a list of other people who are doing other things:
Victoria Inclusive Practitioners has a list of therapists and practitioners working with diverse populations and with lived experience
Curious Creatures has a list of resources in Melbourne that are sex-positive, including therapists and doctors.
RhED provides support for sex workers in Melbourne and distributes an “ugly mugs” report.
Polyamory-Friendly Professionals has a list of resources (mostly in America) of a variety of people who support polyamory, including doctors, counsellors, and body workers.