OK, this is maybe not so much popular culture, but there's a King Arthur thread on here, so I'm going to put this on.
Here are my guesses for characters in the overall charlemagne mythology, including Song of Roland, Orlando Furioso, etc:
Orlando/Roland: INFP. I have no idea about his enneagram type though.
Charlemagne: ENFP 3w4
Ganolen: INTJ 2w1
Oliver: ESTJ 1
Rinaldo/Renaud: ENFJ 8
Angelica: INFP 2 (at least in Orlando Innamorato. In Furioso she seems more INTJ 6w5)
Bradamante: ISFP 6
Ruggiero: ENTP 2w3
Marfisa: ISTP 3w4(though maybe 8?)
Astolfo: ENFP 7w8
Ferragut/Ferragus/Ferrau: ESFP 8
Milo/Milone/Miles d'Anglante (Orlando's father): ESFP 4w3
Girart de Vienne: ISFJ 6
Ranier(Oliver's father): ESTJ 8
Ogier the Dane: ISFP
Galerana/Galeana: INFP 2
Maugis/Malagise: INFJ 5
This stuff really isn't very well known nowadays, so probably no-one will have a clue what I'm on about. Oh, well..