What is the proper way to denote coauthorship in a presentation? I have attended many presentations where one person is presenting work that was completed by multiple people. In most of these presentations, the presenter listed the names of each coauthor in a different way. For instance, two common styles I have seen are:

presentation slide with presenter's name first and coauthors listed underneath

presentation slide with presenter's name listed in bold at the same level as coauthors' names

Is there a proper (or more polite, or generally accepted) way to list the names of coauthors in a presentation?
Both styles are widely in use, at least in my field (computational mathematics). A common variant is that the presenter's name is underlined rather than in bold.

I don't perceive a difference between the two --- it's not like one of them feels "more polite" than the other. Just choose one, and don't overthink it. :)