Affinity is a depricated game mechanic. In current versions of the game, it just represents a recommendation of what Attributes to level with your points, but you are free to assign them as you see fit.
Calise's right there, so we know Velun has one at least.
Keros, Lumia, and Nareva conversely don't have incumbent personal champions at the moment unless the PC fills that role.
Tira doesn't have just one champion.