EUROPE

Vandal, Burgundian (Old, possibly make reformable), Rugian, Gepid, Heruli, Taifal, Bastaernae, Nervii, Eburone, Treveri, Frankish, & others (Germanic or East Germanic)

Briton & Cumbrian ((Insular) Celtic)

Pictish (Unclear Group, possibly with (Insular) Celtic as it is best fit in game, without adding a new culture)

Gaulic (could be divided further), Celtiberian, & others ((Continental) Celtic)

Early Italic groups such as Oscan (Italic/Latin)

Etruscan (change group), Ligurian, Nuragic, & Rhaetian (Uncertain placement, possibly together)

Lusitanian, Vettone, & ? Callaeci (Pre-Celtic Iberian Indo-European)

Turdetani, Turduli, & Tartessian (Isolate likely together)

More Aquitanian languages to go with Basque, who are currently with Catalan and Iberian Romance for purely cultural influence reasons

Pannonian Romance (possibly belong with Roumanians as closest cultural relative)

Polabian & Wendish-Obodrite (Western Slavic)

Dnieper Baltic (Baltic)

MIDDLE EAST

Sumerian, Hurrian, Urartian, Gutian, and Kassite (? Mesopotamian Isolates)