If you are wondering how the Staff are ordered on the Teachers page, this article will be able to help.
On the "All Teachers/Educators" page, staff are first listed by their classes, as the order they appear in the Class Management settings, and then by alphabetical order in each class.
Staff in multiple Classes will be shown under the other classes (also alphabetically), and then those not in a group will be ordered alphabetically at the bottom of the page.
For example, in the screenshot below, you can get an idea of how the ordering works:
Classes are ordered by how the are set in Class Management: