Shalom Mark,
First one thing needs to be cleared- those people who may have Jewsih ancestors who had converted 500 years ago are NOT Jewish, they are not my kinsmen, as far as I and any other Jew is concerned they are 100% gentiles.
Now I don't know where you came to think that most or many Jews hate the Maltese people. Most Jews don't even have an opinion of Malta. The Jewish community form Malta is so tiny, I never heard of any Jew from Malta living in Israel. I think the last time Malta made it into the headline news in Israel was in the mid 1990s, when the mosad assassinated the head of the Islamic Jihad, Fathi Shkaki, in Malta.
If you got your impression from "Babylonianjew" you should know he is a crazy internet troll who also hates Ashkenazi Jews.
Regarding the surnames you nmentioned- Cohen (=priest) and Ellul (the 12th month in the Hebrew calendar) are Hebrew surnames. Abela and Azzopardi are not, so either they were transformed from Hebrew or maybe not. I think Maltese stems from Phoenician, which itself is a sister language of Hebrew.
Lastly I just want to say I commend you fro resisting Islam and may all muslims be evicted from Mlata, Israel and the rest of the free world.