Yes, there are those known primary for hymns:
- Ephraem the Syrian
- Romulus the Melodist
- Prudentius
- . . .
But there are others whose hymns are well known:
- Peter Damian
- Martin Luther
- Theodulph
- Fulbert of Chartes
- Wesley
- St. John of Damascus
You get the picture; If letters deserve their own section then hymns especially ought to have their own section - often they are the only text by the author that users know.