Good afternoon,
My name is Isabel but my family and friends call me Isa which is short for Isabel.
In spain the most common names are Maria for women and Juan or Pedro for men.
My family name is Coll. There are a lot of Coll in Mallorca where my grandfather is from.
I think that there aren't so much names from other countries popular in Spain.
In my country people use Sr. Sra. (or Srto. Srta.) in formal situations but not is normal to use this titlr whith people that you know.
In spanish the most common pet names that show affection, perhaps are: cariño, amor, cielo,...