You made a good job, only a few: I would add Pitzia (p.406), due to his victory over the Roman forces in the Balkans 504/505; and you may take a look at the royal prosopography (pp. 447-461), for many of them were already around in 519 and had important jobs, but are not directly related to Theoderic. Vitiges e.g. made his name fighting in 505.
Cheers! Can you think of anyone important that I've missed?
must spread rep before giving it to you, but good one on the Goths.
I am back, I will soon comment...
PS: it was a great congress!