Surnames like Lo Castro, Zingales, Lo Cascio are quite common there.
Why there's so many Sicilians with those surnames, but very few with Greek influenced ones. Given that the Greeks were on the island for more than 2,000 years, and the Greek migration from Asia Minor to Sicily in Byzantine times.
The Spanish were there more recently and integrated with the Sicilians more, specifically the country of Aragon controlled a large proportion of southern Italy, Sicily included for hundreds of years, hence the Spanish surnames.