My DD is 12 months old and still doesn’t have any teeth. MIL told me that DH didn’t have any teeth until he was 15 months old and then they all came through at once (with no problems/little discomfort)
Mine got her first at 12 months. Last ones only came through at nearly 3 years, whereas some of her friends had the lot before they were 2. Makes no difference to eating/speech etc. Some kids just teeth later than others.