If ramen broth counts as a soup then a good thick miso or pork broth is the king, as is pho broth. If it has to be a soup soup then french onion, especially with a giant gruyere/crusty bread crouton.

Dickgirl and illustrator. This is my personal blog, zero professionalism here, please respect that. 18+, I will be openly posting whatever.
If ramen broth counts as a soup then a good thick miso or pork broth is the king, as is pho broth. If it has to be a soup soup then french onion, especially with a giant gruyere/crusty bread crouton.