I would have said W. dioica but iNat suggested W. biglandulosa. Looking at VicFlora, it does seem to be a better fit? Habitat also fits.
There is a large stand of E. strzeleckii where these were found. I originally had it down as ovata.
@bushbandit Michael, I originally had this down as P. alpina (which is common here) but iNat suggests P. foliata and reading up on VicFlora and in Native Orchids of Australia (David L. Jones), I'm now starting to think it could be foliata?
@bootownbeginners Mike, your thoughts?