I made a possible set for Hungary and West-Balkan. Used 67 territories to compare with other units what I counted previously. The total value of those were 108-128, this unit has total 116.
Rich regions:
Esztergom - royal residence, archbishop's home
Óbuda Pest - former principal headquarter, bishopric
Pozsony - fortified stronghold near to german border
Zagreb - croatian capital, bishopric
Belgrade - serbian stronghold, crusader center
Gyulafehérvár - former principal home, residence of transylvanian voivod, bishopric
Kolozsvár - stronghold, former dacian capital, transylvanian capital
Ragusa - trade center, sea port, archbishop's home
Dioclea - archonate, principality, kingdom, archbishop's home
Zara - dalmatian capital, trade center, bishopric
Medium regions:
All have at least a notable old city, and optionally a stronghold, religious or cultural institute, or merchant center
Poor regions:
Tisza river region - unpopulated with many flood basin, marsh, and swamp
Tatra region - high mountains, low population
Serbian borderland - war-torn region claimed by Bulgarian Empire, Byzantine Empire, and Hungarian Kingdom too
Rural Croatia - village region without notable cities
The main cluster is Pannonia former roman province and contemporary power center of Hungary, another smaller center in Transylvania with valuable gold, salt, and wood sources, and local centers around wealthy dalmatian cities and capitals of Croatia and Serbia.
And some naming issue, hungarian names miss the special characters (áéíóöőúüű) but the old texts miss too so I think its not a problem, but there are few misspells:
Koloszvar - Kolozsvar
Gyula Fehervar - Gyulafehervar
Orsonova - Orsova
Sigetvar - Szigetvar