Holy Romanian Empire ? (j/k)

That one already fell to Napoleon.

Mainly thinking of the Ottomans ("around" WW1, not strictly in it, but IMO the war itself caused it), who defeated the Eastern Roman Empire, who in turn were not only a successor to the pre-split Roman Empire, but which also occupied the city of Rome itself for a while on three separate occasions.

Looking at just the city of Rome itself, you've got the following mess that I'm just copying from Wikipedia with light formatting:

Western Roman Empire — 286–476; Kingdom of Italy — 476–493; Ostrogothic Kingdom — 493–536; Eastern Roman Empire — 536–546; Ostrogothic Kingdom — 546–547; Eastern Roman Empire — 547–549; Ostrogothic Kingdom — 549–552; Eastern Roman Empire — 552–751; Kingdom of the Lombards — 751–756; Papal States — 756–1798; Roman Republic — 1798–1799; Papal States — 1799–1809; First French Empire — 1809–1814; Papal States — 1814–1849; Roman Republic — 1849; Papal States — 1849–1870; Kingdom of Italy — 1870–1943.

Which might make my core point even more strongly? IDK.