Hi @Nescio and @Itms,
I have finished the Unit Listing and am attaching it now. I only found two items that did not have a "Specific" name, a Kush Bireme and Maur siege ram.
I'll start working on the in-game documentation until I get some input from the developers on what they need. I am still kind of searching to find out what exists already.
If you have any ideas or wants just let me know.
Unit Listing Alphabetical.txt
Basically the huge majority should be changed, the current names for the Celtic units are mostly based on modern Celtic languages (for example modern Welsh).
I made a list of names from my various proposals based on ancient Gaulish or old Celtic languages. Here a summary:
Cingetos. Designate a member of the warrior class, litt. "those-who-walk-in-front".
Catucos. Meaning combatant, from the root Catu-, fight.
Batoros. Meaning "who-hit-hard" or "who-knocks", a fighter.