The Star Forge model is from Warb_Null for the game Empire at War: Forces of Corruption.
Warb's Moddb page: https://www.moddb.com/members/warb-null

Model: Warb Null
Skin : Warb Null
Sun textures : Lord X
XML : Warb Null
Icon : Warb Null
Particle effect : McKay

Credit also goes to DrBLOOD's Mega Shipyard mod for allowing me to use some of the mod's code.

His mod can be found here:
https://steamhost.cn/steamcommunity_com/sharedfiles/filedetails/?id=1255617173&searchtext=mega+shipyard

The Starkiller Base model and skin were created by Warb Null for the title Star Wars: Empire at War.
The Supremacy's model, skin, and rigging were also created by Warb Null and Jeroenimo for the title Star Wars: Empire at War.
Link to Warb's moddb page: https://www.moddb.com/members/warb-null
Link to Jeroenimo's moddb page: https://www.moddb.com/mods/empire-at-war-re/addons/supremacy-dreadnought-freerelease

The custom building icons: "Massassi Temple", "Imperial Palace", "Jedi Temple", "Hoth Ion Cannon", starting system template, and the custom Yavin gas giant are from Death of Rats' mods are linked here:

https://steamhost.cn/steamcommunity_com/sharedfiles/filedetails/?id=771735771&searchtext=Hoth
https://steamhost.cn/steamcommunity_com/sharedfiles/filedetails/?id=757092966&searchtext=Yavin
https://steamhost.cn/steamcommunity_com/sharedfiles/filedetails/?id=752760686&searchtext=Coruscant

The original sith empire portraits are credited to Death of Rats. Original mod linked below:
https://steamhost.cn/steamcommunity_com/sharedfiles/filedetails/?id=811096866&searchtext=old+sith+empire

SWTOR Mandalorian portraits were provided with permission by Bosmeri from Star Wars: Legacy of the Old Republic mod.
https://steamhost.cn/steamcommunity_com/sharedfiles/filedetails/?id=2791119024&searchtext=Legacy+of+the+Old+Repulbic

The Eternal Fleet Battlecruiser model is credited from the Legacy of the Old Republic total conversion mod.
https://steamhost.cn/steamcommunity_com/sharedfiles/filedetails/?id=2791119024&searchtext=Legacy+of+the+old+republic

- Special thanks to developers Bane and ek for permission to use this model.