Games like Endless Space 2: Dark Matter

If you finished Endless Space 2: Dark Matter, the closest matches are Warhammer 40,000: Gladius - Relics of War, Warhammer 40,000: Sanctus Reach, Interstellar Space: Genesis, MegaMek and Armies of Armageddon: WDK 2K. All 9 share its strategy genre and are ranked by how closely their themes and modes overlap.