Name a Dunmer that supports the city they live in. They live to support only themselves and not the walls that keep them safe.
The Kahjiit only support themselves, but at least they have the decency to not leach off people. If you're going to live some place you need to support it.
Dodging the question I see.
As per your request:
Luaffyn helps keep spirits up in Candlehearth Hall, a vital job considering the dark days in Skyrim caused by Ulfric's regicide.
Idesa Sadri helps rear the Cruel-Sea child.
Revyn Sadri supplies the people of Windhelm with various goods and wares, and tries his best to make sure nothing ill-gotten is sold by him (contrast this with the only other general goods
dealer in Windhelm, a known fence for the Thieves' Guild).
Aval Atheron is a business owner who sells meat and other food products to the people of Windhelm and tries to help the living situation in the Grey Quarter.
Faryl Atheron is a farm worker who helps Brandy-Mug grow and harvest her crops.
Suvaris Atheron runs the Shatter-Shields' business, and keeps coin and goods flowing into Windhelm.
Belyn Hlaalu owns a farm, and again helps the people of the city get their daily bread and even has an employee. Without him, Adisla might be unemployed and possibly homeless.
Ambarys Rendar runs the New Gnisis Cornerclub, a place for people to come together and find kinship in rather cold, and troubling times.
Malthyr Elenil helps keep the Cornclub looking as nice as he can, which isn't much considering the Grey Quarter's run down and sorry state.
The Dunmer have made themselves an integral part of Windhelm's infrastructure, and everyone is doing their part. Now, you can say that they aren't doing their part for the war effort, but that's not the same as doing their part for Windhelm, and even that claim is questionable. They're helping on the home front, which is just as important as the battlefield.