(CNN)For the first time, Muhammad is one of the top 10 most popular baby names for boys in the United States, according to data from the parenting website BabyCenter. Muhammad ranks at No. 10, up four spots from last year. The name has been climbing steadily on BabyCenter's rankings over the years and first entered the top 100 in 2013. "Muslim families often choose Muhammad for firstborn sons to honor the prophet and bring blessings to the child," Linda Murray, BabyCenter's global editor in chief, said in a news release. "The name also has multiple spellings, and that helps a...