Q1: Why can't I add "rapper," "musician," "Songwriter," or anything similar to the lead section?
A1: As per MOS:ROLEBIO, we only include positions in the lead section of Wikipedia articles if they are notable. This is not the case. We do mention Ben Shapiro's appearance in a rap music video in the article, however, we don't add this to the lead.
Please see this discussion for more details.
Please see this discussion for more details.