One of the parallel universes within the 10,000 Dawns was the original home of Graelyn Scythes and Archimedes Von Ahnerabe.
Until the early 21st century, the history of its Earth was broadly similar to that of the Totality. However, they sharply diverged after that, and Graelyn and Archimedes's native 25th century was completely different from the Totality's. By then, "the whole solar system was run by one big corporation called Centro Systems". Eventually, after a few "misadventures", Graelyn and Arch left their universe to become part of the organisation known as Dawn.
Another notable facet of this universe was that, as was seemingly the case in multiple other Dawns, many works of fiction existed whose contents corresponded, by coincidence, to real events in the Totality, particularly as related to the war. This included Head of State, a novel by Andrew Hickey which documented Rachel Edwards's investigation against the backdrop of the Lola Denison campaign. A version of Rachel Edwards actually also existed in this world; she learned of the coincidentally-identical fictional character, but laughed it off and thought no more of it. (PROSE: Rachel Survived)