One of the houses that supported Daniel in his fight against the Bene Tleilax, they were assisted greatly after the war. While they didn't receive as many accolades like Hades, the amount of relief aid coupled with the lack of destruction of their domains left Kiz in a much more powerful position compared to before.
Their production of weapons coupled with the smuggling trade routes established by Daniel, especially with smugglers on Arrakis brought much wealth in the coffers of the House.
Expanding their factories and improving production chains, both on and off world, allowed them to assist with rebuilding of other areas on Azhar pushing their influence even further.