Announced in IBA style, highest to lowest number with any weird or notable snippets as the rider makes their way up. Seeing that IBA distances will be mandatory and easily categorised maybe highest IBA number SS1600 first followed by the rest of the SS1600s in descending order, then SS2000Ks, BBGs etc.
Ive been to only a couple of IBA events before. I found out more quick snippets about other rider's adventures at the presentation than when on the road or at checkpoints.
eg Rider 62345 completing a SS1600 from Brisbane via Melbourne including hitting 2 kangaroos on the Victorian border on his BMW GSA - Fred "Blue Tongue" Brown.
The rider will recognise their number and be walking out to collect their certificate as the MC does their thing and everyone gets to hear the riders name and see who they are at the same time.