Thorakitai shows up several times in Polybios and I believe in a number of inscriptions.

Pheraspidai (old name and wrongly declined, should be Pheraspides) was based on the former concept that the unit was Hypaspistai in assault gear and translated roughly to "assault shield-bearers". In actuality, they were a separate unit or the elite pikemen in assault gear. It's complicated, but the rundown is that it is based off of some Antigonid inscriptions that state the equipment and role of Peltastai. We added Makedonikoi as an adjective to describe the fighting style and not necessarily the ethnic makeup; however, I suppose in the East the unit could be composed of Makedonians, Greeks, Thraikians, etc if they were wealthy enough.

Expect the Peltastai Makedonikoi to look a bit different in EB2.