does anyone know the name of the font used for the "S"

Pauls Super Font  Suggérée par fonatica 

nice!!!!

Pauls Super Font is a font inspired by the Superman logo. But if you were asking from what font the creator of the Superman logo got his inspiration, I think there is no such a font. He just made up that S and it has changed over the years.

https://1000logos.net/wp-content/uploads/2017/06/Superman-logo-history.jpg