@Salacia , I only picked Shannon because a friend has one and it was a name that was very popular for a short time. It just sounds like a surname to me.
The Betty thing might be regional but the 85-yr old were mostly Bettys where I'm from, and there were a lot of them.
@Hols24 , depending on accents, sometimes extra sounds get added to names or sounds removed. Where I am, Raphael gets said as Raffuh-yell, Joel as Jo-well, Naomi as Na-yomi, Ottilie as O'illy etc. Joanna probably gets said with a prominent W sound where the pp is, whereas is should be more like the o in No or Phone.