Most Common Librarian Names include Johanna, Abigail, Margot, Nanette, Julia, Eleanor.
(The data set apparently only looks for common names that aren’t found in other fields. So a popular name like “John” or “Jennifer” which is fairly common across all areas won’t show up unless it is an outlier – eg. *extremely* popular in a certain field. Otherwise, you’re finding fairly unique names that happen to be found regularly in certain professions.)