Since we are in the last phase before release I will try to go through all the text files and search for mistakes. I'll post what I find in Pastebin and link my pastes down below, my corrections are in "{}".
List of contents
AbilityText
AltarianTechDefsText
AnomalyDefText
ColonizeEventText - none
CosmeticComponentText - there are some entries that don't have a " " in the string
CultureTraitText
CultureTreeText - none
CutsceneText - none
DiplomaticModifiersText
DrenginTechDefsText
FactionShipStyleSetDefsText - none
FactionText - no leader descriptions; the Yor, Iconians and Thalans all have the same Startup Title: The Iconian Legacy.
GalacticEventsText - none
GameTermText - none
GovernorDefsText - none
IconianTechDefsText - the flavor text in this one needs to be changed some more to differentiate it from the Terran one.
IdeologicalGalacticEventsText
ImprovementText
IridiumTechDefsText
KrynnTechDefsText
NebulaDefsText - none
PirateTechDefsText
PlanetFeatureText
PlanetText
PlanetTraitText - none
RaceTraitText
ShipClassText
ShipComponentText
ShipHullStatText - none
ShipHullText - none
ShipText - none
SpecialShipComponentText
StarbaseModuleText
StarNamesText - found a few names that are repeated
StarSystemText
StatText
StellarObjectText - none
TechDefsText
TempText - skipped
TerranTechDefsText
ThalanTechDefsText - the flavor text in this one needs to be changed some more to differentiate it from the Terran one.
Tutorial_CampaignText
Tutorial_FactionText
Tutorial_ShipStyleSetDefsText - none
Tutorial_TechDefsText - skipped
Tutorial_Tutorial_DrenginTechDefsText - skipped
Tutorial_Tutorial_IconianTechDefsText - skipped
Tutorial_Tutorial_PiratesTechDefsText - skipped
Tutorial_Tutorial_TerranTechDefsText - skipped
UIText
UPResolutionDefsText
YorTechDefsText