Augustus in the Civ 7 is speaking reconstructed Old Latin rather than Ecclesiastical Latin like all the Roman leaders in Civ 6, so credit where credit is due.
However, I also want to point out that the model of Ashoka in Civ 7 is roughly based on his depiction of the relief from the Sanchi Stupa (in which he is a half-naked man with very simple ornaments) rather than more common portrayals you can find on the internet (in which he dresses like a Delhi Sultanate nobleman). In fact,
ARA's Ashoka is basically a stereotypical Indian raja, for that is much more recognizable to a largely western player base.
Then, In this particular case of Ashoka, Civ 7 pivots to more accuracy in favor of (probably?) less readability - and this is where having a historian as an advisor helped (credit to Dr. Andrew Johnson). I would say that when deeper but more accessible info is on hand, such as coming from a historian directly working with them, FXS will not shy away from embracing more accuracy.
The same might be said regarding Chinese-related designs. Kongzi has a very faithful model (to the point that I have seen people calling him "ugly" despite the model fits how Kongzi was usually portrayed), and it is indeed very easy to find the traditional portraits of Kongzi online. But for something like the Han Great Wall, you probably need someone from an academic background to help you - even for most Chinese, they don't really know what a Han Great Wall looked like - and this is where FXS used visuals of the Ming Great Wall instead. Similarly, we also do know what a Han-era ship looks like (there are contemporary ceramic models for ships), but that info is not very easy to find as well (one needs to be aware of the existence of the ceramic models, for instance).
I would still say having a historian helps with representation!