Not all the Roman Emperors were Italian and/or European. It is important to remember that Rome was a multi-ethnic and racial society where of course differences were acknowledged but the ancient world’s view of race or ethnicity was different than our modern concept. With the rise of Right Wing politics appropriating Roman imagery, it’s important to remember that Rome was a melting pot.

Imagine for fun if Rome still existed and they liked playing soccer (football) but each country that competed had to align to the birthplace of the Roman Emperors. Call it the Emperor’s Cup for fun. This list is up to the Macedonian Dynasty of the Eastern Roman Empire, because by the 800s in the former Western Empire, the Franks were already on the rise and would rule the West thus ending Eastern claim over Central or Western Europe.
Albania: Anastasius I Dicorus

Armenia: Leo V the Armenian

Bulgaria: Galerius, Marcian (possibly), Leo I, Tiberius II (Thrace area, so likely Bulgaria, but possibly Greece), Phocas (possibly Bulgaria or Turkey)

Croatia: Valentian, Valens

France: Claudius (Lyon, France), Caracalla Antonius (Lyon, France), Carus (near Narbonne, France), Constantine II (Arles, France)

Georgia: Heraclonas

Greece: Anastasius II (of Greek origin at least but may have been born in Turkey such as in a Greek colony), Irene of Athens, the Nikephorian Dynasty was like of Greek origin.

Italy: Julius Caesar (not an Emperor actually), Augustus, Nero, Claudius, Caligula, Tiberius, etc.

Libya: Septimus Severus

North Macedonia: Justin I, Justinian I

Portugal/Spain: Magnus Maximus

Romania: Licinius

Serbia: Constantine, Diocletian, Decius, Hostillan, Claudius II, Quintillus, Probus, Constantius II, Maximian, Gratian, Vetranio, Jovian, Aurelian, etc.

Spain: Trajan (Seville, Spain), Theodosius, Arcadius

Syria: Elagabulus, Phillip the Arab, Leo III (Syrian descent but Turkish born)

Tunisia: Aemilianus

Turkey: Gordian, Julian, Honorius, Zeno, Leo II, Justin II, Maurice, Heraclius, Constans II, Constantine IV, Justinian II, Leontius, Tiberius III, Philippicus, Theodosius III, Constantine V, Leo IV the Khazar, Constantine VI (possibly Turkey), Michael II

Basilicus (The Balkans, so not specifically defined, but for a modern state equivalent we can say the former Yugoslavia, i.e., Serbia, Croatia, Bosnia, Montenegro, etc.), Leo II (not sure his place of birth but he die in Turkey, so I will count him there), Heraclius Constantine (Unsure, possibly Turkey, Bulgaria, and Balkans), Artabasdos (Unknown)