A database I found, http://www.meaning-of-names.com/, contains the largest assembly of all names, male and female.  If these names were made up, they would not appear in the database of historical names.  I've entered a number of obscure names from the Old Testament into the database and discovered some names not there - Zerubbabel, Meshullam, Jozadak.

Many of these other names do...Jeshua, Nehemiah, Seraiah, Reelaiah, Mordecai, Bilshan, Mispar, Bigvai, Rehum and Baanah...names I don't hear today.

However, these names are the stars of the Book of Mormon.  Their names should be perserved.  Here are the meanings of the names.  THIS IS AN ONGOING POST THAT WILL HAVE NAMES ADDED.

Helaman - not found
Ishmael - God listens (Hebrew)
Laman - not found
Lehi - jawbone (Hebrew) - it's a female name, but in the BOM it's a male
Lemuel - devoted to God (Hebrew) - male/female
Nephi - not found
Sariah - princess of the Lord (Hebrew) - female
Zenos - Gift of Zeus (Greek) - male
Zenock - not found
Zoram - not found