Numidian Archers are quite good. They are inferior to Persian or Nomadic archers in terms of, well, archery, but are still better than the various European archer types, except for Baltic Frontiersmen (and Bosphorans and Cretans of course).
Decent basic armour (3), range (170 m) and overall stats, especially an armour-piercing club for melee, means they are very versatile troops and the second best choice for Romani, after Cretans.

Celtic and Germanic archers have 120 men/unit each and are crappy archers, but fairly decent in melee. Greek Toxotai are crappy all round, though still stronger than Accensi.