BrightDarkness6

It might be interesting to consider that the heralds other than Talenelat were all Kings and this might have something to do with the nations specialization or focus on one particular radiant order. They may not have known the heralds were their kings but if they brought their culture and ideology to the order of knights that they founded then it would make sense for their kingdoms to recognize aspects of their culture in the ideals of that order and identify further. This seems to me, if you are thinking of the kingdoms "choosing informal patrons", that there might be a bigger or more natural connection between the nations and the heralds.