Although most of the time it is straight forward to build Victrix miniatures or you will just choose your own combinations and conversions, Victrix does provide some guidelines.
We will post here most of those guidelines as we find the material available
Carthaginians
Carthaginians punic infantry, veterans and javelinmen

Gauls
Armored Gauls

Mounted Gauls

Gallic fanatics

Romans
Roman Hastati ( pectoral armor )

Roman Principes ( chain mail roman sprues )

Roman Cavalry

Roman allied legions

Greeks
Armored Hoplites

Unarmored Hoplites & archers

Peltast & slingers

Greek light cavalry

Greek heavy cavalry

Italians
Sorry guys, for Italians Victrix only gives us some fluff.. still posted it to look at some minis and also got these nice renders from the Victrix website to look at them in detail https://www.victrixlimited.com/
Unarmored Samnites


Armored Samnites


Numidians
Numidian Cavalry

Numidian infantry

Iberians
coming soon