[Vanilla] Where can I find the Vikings Scenario Icons .dds files?

[Zobtzler]

I've been looking through both the SDK assets and the DLC folders but there are no .dds files to be found.
I'm mainly looking for all the VikingsScenario_CivSymbolsXX.dds files to be precise.
My guess is that since the .dds files for the base game civ icons are in the SDK assets, the DLC assets cannot be accessed because they are not included in the SDK assets.