Did the Caesar's have italian mobster accents?

You mean the Roman emperors? If so, they spoke Latin and not Italian. No one knows exactly how spoken Latin might have sounded but it is a pretty straightforward language.

(You do not need apostrophes to make plural proper nouns.)

Caesars
Sopranos

No, because mob accents are by Eastern American people of Italian descent speaking English. The Caesars were speaking Latin. If it sounded like anything recognizable today, it was probably close to modern day Italian. But that is a wild-ass guess.

If they had been speaking English it might have been close, but not necessarily the same. When I was in Bath, England with my family an Italian-British owner of a restaurant came over to talk to us and my dad thought he was from Brooklyn. LOL.

Pictures Caligula responding to a mocking crowd, “What, I amuse you like a fucking clown?”

Nero to Rome, “Nice city ya god-hea. Be a fuckin shame is sompen happened to it.”

Julius places a horse head in Mark Anthony’s bed, “Cleo’s my bitch, you even look at her & i’m gonna cut ya fuckin balls off fella.”

It’d seem fitting. I can picture the senators: “yo, let’s whack Julius Caesar”.

Everyone remembers Julius Caesar saying “Et tu, Brute?”
No one remembers Brutus responding “Fuck’n A! Badda bing!”

It was never, “Carthage must be destroyed!” It went more like, “Let’s go get them mothah-____ahs!”

No. But they did make a killer salad :)

(.. and it was so much better than nowadays since they didn’t have to worry about Salmonella in the raw egg )