The current game maps have only icons. At that size, having room to have smaller icons is hardly noticeable. The banners in this map are much larger and having room makes them very noticeably inconsistent. Also, at icon size, the type of banner doesn't matter but becomes very obvious in this map.
What I can see:
Logo - Coria, Minas Ithil
Flag - Talerium, Suville, Eston (with pole)
Shield - Barony of Makar, Cagilan Empire, Tara, Strombran
Crest - Darka, Caergoth, Carelia (it has a crown), Minas Leon (it has a crown)
There should be some standardization.