I did the sankey diagram in PowerBI a while ago for a faculty data request regarding students flow into and out of selected interdisciplinary majors.
Both PowerBI and Tableau have apps for building sankey diagram, but personally I think sankey app for PowerBI is more user friendly.
Here is the link to the mock-up Sankey diagram for a fake program. You can filter by major, entry status, year level and you can build more programs and cohorts to it.
Sankey Example