On languages that aren't Semaphore: are there any races that the Irim Dwegsho-in-exile trade with more than others? Are there any that are interested in technology more than normal (just from a fluff perspective)?
This question hasn't been answered with anything that doesn't involve Semaphore.
A number of lanius, Urtragian, and Zebesian communities within the Dwegsho reverted to old habits/cultural norms during/after the exile. A lot of lanius went wandering/scavenging, while several groups of space pirates took to land and sea piracy, banditry, organized crime, and other criminal activities.
Most of the Phrygisians weren't actually part of the Irim Dwegsho when it was conquered by Vanda. Most of the communities that arrived with the Irit refugees were themselves refugees displaced by Vanda's conquering on other fronts. Consequently, they have weaker ties to the Irim Dwegsho-in-exile, and tended to spread out more. Many of them wound up as travellers and traders as the new Phrygisian communities spread.
During the Irim Dwegsho's height, engi and zoltan cultures placed a greater emphasis on higher education that many other cultures within the Dwegsho. Although that has waned somewhat, in no small part due to the entire infrastructure of education being blasted back by at least centuries due to the exile, the cultural emphasis is still there. Consequently, engi and zoltan tend to be the most represented in the higher technological fields.
There are other, nebulously defined races in the Irim Dwegsho-in-exile, but since that's all the ones that have been statted up, assume the rest are your background alien races that will never come up except as extras and the occasional guest star on an episode, who primarily serve to make a scene look more diverse and to ensure the makeup department doesn't get bored.