I agree. E. rossii tends to come in at Wingello where it can occur with E. sclerophylla, but the further west and southwest you go, E. rossii becomes more common and ultimately replaces E. sclerophylla. The former tends to like colder and drier sites and is more of a tablelands species, extending to the western slopes (and probably beyond on higher ground).
Keep in mind that there is taxonomic contention about some of the scribbly gums. The NSW Herbarium has apparently accepted a revision that lumps several of what were distinct species, into a broad concept of E. racemosa. But E. rossii has been retained as distinct. The leaves of the specimen are too broad for E. rossii. There are too few umbels in the umbellaster for E. rossii. But fertile traits seem to match it within the limits of what is visible in the photos. When compared with the definition of E. racemosa as it is now accepted (an amalgam of several things, including E. sclerophylla, which would have been my call on it), there's little to separate it from E. rossii. But in my long-term experience with these eucs, E. rossii has consistently narrower leaves than E. sclerophylla and those in the specimen photos are too wide for rossii, so I revert to sclerophylla which is now, rather dumbly I think, treated as E. racemosa. I haven't read the paper that lumped things into racemosa, but from a field botanist's perspective, it doesn't stack up. But on the basis of currently accepted taxonomy, E. racemosa seems the best fit.