The common names in my country are José, Lupita and Rosa.
My family name is not common. It is Valdeolivar. One aunt told me that it means valle de olivos. Something like field for olives. I didn´t know it. To be honest I am not interested in searching for information about it. My name is not related to any occupation but is related to a flower: The rose. I don´t think that we, in Mexico, have a name linked to a job. I mean, it doesn´t come to my mind.
In Mexico, when you meet someone for the first time you say Mr. or Mrs.(If they are old people).
However, if they are young people , you can talk to them informally.We don´t use surnames with titles. Sometimes you could hear these expressions when you want to sound ironic. You would say something like” La familia Lopez”. But is not quite often.Te pet names that you can hear are:gordita,flaquito,bomboncito, and “mijo” Mijo is short for “ mi hijo” (My son).