My University limits my StoryMaps access level, but we have an institutional license with ArcGIS Online. I've saved my maps in that space, but when I try to add a map from "my content", none of the saved maps in my ArcGIS Online account appear there. I've ensured that they're accessible/shared with "everyone" and I've cleared my cache, as per other troubleshooting suggestions.
How can I upload my Arc map content into StoryMaps or effectively transfer them from ArcGIS Online to StoryMaps?