I sent a private message to Daren regarding German vehicles engaged in Greek battles during WW2. If anyone can give me an exhaustive list of units/vehicles in Greece during ww2 it would be extremely appreciated.

Michael, may I suggest that you get yourself a copy of this book, which was published recently. It names and shows most Axis armoured vehicles during the Balkans Campaign, and probably is one of the best books on the subject.
https://armorama.kitmaker.net/news/31073