The Book of Mormon contains many other names which are attested or plausible such as:
Akish, Alma, Ammon, Ammonihah, Chemish, Cumorah, Gidgiddoni, Gidgiddonah, Gidianhi, Hagoth, Helaman, Hem, Himni, Isabel, Jarom, Jershon, Josh, Kish, Kishkumen, Korihor, Kumen, Kumenonhi, Lachoneus, Laman, Lemuel, Lehi, Luram, Manti, Mathoni, Mathonihah, Mosiah, Mulek, Muloki, Nephi, Paanchi, Pahoran, Pacumeni, Pachus, Sam, Seantum, Shiblum, Zarahemla, and Zenoch
John A. Tvedtnes, John Gee and Matthew Roper remark:
In recent years, a large number of ancient writings have been found in and around Israel. While many of these include names found in the Bible and other ancient texts, others were previously unattested in written sources. Some of these previously unattested names are unknown in the Bible but are found in the Book of Mormon. The discovery of these Hebrew names in ancient inscriptions provides remarkable evidence for the authenticity of the Book of Mormon and provides clear refutation of those critics who would place its origin in nineteenth-century America.– John A. Tvedtnes, John Gee and Matthew Roper – Book of Mormon Names Attested in Ancient Hebrew Inscriptions
If Joseph Smith made up all the names in the Book of Mormon, would we expect to see so many of them attested?