Views Sort by Taxonomy with headers
The trick is to add a view of taxonomy terms, and then add a relationship to the content. You'll also have to hide some fields and add a grouping field in the unformatted list settings. Details are below.


Create a new view that shows "Taxonomy terms" of type "expert [vocabulary]" sorted by Unsorted
Continue and edit
Add a relationship under Advanced > Relationships
Choose "Taxonomy term: Content with term" (Relate all content tagged with a term) &amp; apply to all displays
You'll now be able to add a field and the content will show up. Click add next to Fields and select the Content Title or whichever field the name is stored at.
Uncheck "Create a Label" and apply.
Click on Format > Settings, and select "Taxonomy term: Name" in the "Grouping field Nr.1" dropdown, and click Apply. This will create a heading of the taxonomy term.
Hide the taxonomy terms from showing up extra times by clicking on the "Taxonomy term: Name" field, and click "Exclude from display."
Uncheck "Link this field to its taxonomy term page" so that the taxonomy term is not linked to it's page.
Save the view, and view the page.