There are only really three indo-greek units in the game, the indohellenic peltasts, indohellennic infantry and indohellenic noble infantry all the rest are either indian or hellenic Saka units.
Some would have been used in indo greek armies (light spearmen, longbowmen, guild wariors Taxilian cav, Kamboja's and elephants) but others are products of Greek/Saka interactions and wouldn't be seen in Indo-Hellenic armies (the hellenic hoplite and maybe the greek cavalry) as for the Indo-Saka Cataphracts the clue is in the name, they certainly would be in a IH army.
But in the end the Indo-Hellenic Kingdom is highly unlikely to be in EBII due to the fact it didn't exist in 272bc.
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