Herald feels like Bard type to be honest perhaps one of those that dips into prophecy![]()
A 'Herald' was someone who was subordinate to a higher commander -- a herald was often literally a standard-bearer (i.e. carrying someone else's standard) and that doesn't always fit. Lord of the Rings Online negotiated this by having the 'Captain' class get a pet standard-bearer.
Later in the Middle Ages, Herald was also used for the referees at tournaments/battles and the record-keepers, neither of which really fit either, at least imho. That sounds more like Bard work.