That would be a secretary.
Rabbis don't have "helpers".
It's a title which means "deserving of respect" and is used for people such as judges or mayors.
There are some titles you do not want your hometown to be labeled with. One of which is the city that has had the most mayors serve jail time. That is a title currently held by Camden, New Jersey.
910 mayors
The Mayors was created in 2004.
790 mayors
The title of the priest's helper is typically "deacon." Deacons assist priests in various liturgical functions and may also have responsibilities in community service and pastoral care. In some denominations, there are also specific roles like "altar server" or "sacristan" that support the priest during services.
Ionia Mayors was created in 1921.
Mayors for Peace was created in 1982.
Montvale mayors
States have governors not mayors. Cities and towns have mayors.
The mayors term of office is 50 years