The sources I've read are all secondary (modern, not period like Livy), but from what I have read "Imitation legionaries" seem to be attested to the Armenians, Numidians, Pontus, the Seleucids and the Ptolemies. With Carthage at least the last reference I read suggested his liby-punic men equipped with roman gear still fought primarily with the spear. For Macedon I am utterly unfamiliar but what little bits I had seen came across as they simply made their thuerophoroi heavier rather than really produce manipular legions.
I've got two great ebooks of the Seleucid and Ptolemaic reformed armies 168-145 BC by Nick Sekunda and Angus McBride, without knocking Osprey's professionalism these are even more so (with most of the plates not being colored images but rather pictures of period reliefs and artwork).
I cannot upload them as that'd be criminal (And crime is for Romans.

), but from a quick glance over for either. Ptolemies first, then I will post the Seleucids.
Ptolemies:
-Earliest references to a new "Romanized" military structure is 163 BC.
-Lots of bureaucratic information, too much for me to summarize.
-Only 1 out of 9 or so representations of "Romanized infantry" on the stelai wear a cuirass - author suggests it's probably because most didn't wear heavy armor while performing garrison duty. But also it may have been the case that not all maniples in the regiment wore the mail cuirass in the Roman and Ptolemaic armies alike. He goes on to say "What IS important is that one of the soldiers -does- wear a mail cuirass."
-"Secondly, none of the "Romanized" soldiers shown on the stelai have replaed their spears with spanish swords and pila. This can perhaps be explained if we believe that the Hellenistic kingdoms did not have the steel technology necessary to produce an entirely reliable blade. Principle reliance, therefore, continued to be placed in the fighting spear - which in the reliefs is the same size as the Roman Hasta. Likewise, the thueros shields are not as big as we would have expected; they are rather, exactly the same size as those thueros shields which had been used throughought the Hellenistic world during the late 3rd century. What one has to bear in mind, I think, is that we are not looking at Ptolemaic troops wearing Roman panoply but looking at Ptolemaic troops wearing a Ptolemaic version of Roman equipment"
-Stele of Dioskourides of Balboura (sidon) has the thueros bearer with sword.
- Fresco from Alexandria (late Roman, copying earlier Hellenistic scenes from mid 2nd century) #88 has a spearman with a clear baldric and sword. Unclear if armor or clothing.
- Egyptian Terracotta of infantry. 91 has a cuirass, 93 does not. Both have thueros and hands on the hilt of their sheathed sword on the right side "Roman style".
- Terracotta from Fayoum suggesting late era Machimoi. Thueros with sword.
- #121 and 122 are Galatians, interestingly have the same "Roman" pose of hand on right-hipped sword hilt, thueros shield.
I may be wrong in this assumption but to me it sounds like the Ptolemies were slowly shifting over to manipular warfare, first by placing greater reliance (perhaps entirely replacing Sarissa phalanxes?) with Thuerophoroi with spears as the primary weapon. Later on you start to have at least visual artwork favoring the sword with no spear. However there was no (in my quick read) evidence to say the proportions of troop types for the Ptolemies in the later period. So maybe these thuerophoroi/thorakitai were still not the main kit and kaboodle of the army.
And I feel too lazy to recap the Seleucids. Besides, they aren't playable!
PONTUS IS!
But from what I recall of that book, the Seleucids seemed to have been in about the same straits or possibly a bit further behind the Ptolemies. I seem to recall Manipular units being more of an exception to the rule (as a small part of a martial parade or some such compared to sarissa phalanxes and foreign troops - many of whom might have fought somewhat like imitation legionaries with sword and scutum of course) and less of an apparent attempt to reform the entire army.