Collaboration of non Microsoft file types
I have a number of architect firm clients that are currently using GoTo Meeting (or something similar) to allow sub-contractors or Guests to share in collaborative "mark-ups" (red pen annotations etc...) on the AutoCAD or Revit drawings within the meeting space. I know you can mark up Word docs and even PowerPoint presentations, but I have yet to figure out how to get a non-Office Suite file type into Teams where you can share out those capabilities.
Andrew Taylor commented
If it were exported to PDF or image, that would be the best method. From there you could insert it into a OneNote page or perhaps even on the Whiteboard in a meeting. OneNote is having syncing issues with Assignments right now but it doesn’t seem that would be an issue for your use case. The whiteboard is saved afterward as its own file, though if you’re recording unfortunately the whiteboard won’t be recorded in the video.