While much of Halo's iconography comes from the UNSC ... as an alliance between the San'Shyuum (Prophets) and the Sangheili (Elites), but later expanded to "assimilate" other species including ...

That's reflected in the Operation's cosmetics, which features some armor designed inspired by Sangheili patterns ... a shame that playable Elites weren't available in Halo Infinite, it's good ...