It was in my back yard early January 2024. I can’t find one with similar markings in your list. Ok I have now found it on the csiro website. Apparently it is not a Christmas beetle.
2cm long. Came to light. Area is semi rural eucalyptus and Ironbark forest and paddock.
Roughly 20 pairs of mating christmas beetles! In a Eucalyptus viminalis tree situated in semi native grassland with many dead trees around - on farming property. Other nearby Eucalypts had no beetles at all.