I've seen a couple of A. decora before, and I personally think they have longer thinner leaves than this. Could possibly be a slightly unusual A. buxifolia subsp. buxifolia, though given your experience and comparing with other images it seems to be a good fit for A. buxifolia subsp. pubiflora, though I'm not sure how widespread that would be planted or naturalised locally.
Yes I think it got merged by one of the Michaels into A. buxifolia subsp. buxifolia during the earlier days since its the only local subsp. But would be useful now.