How can I tell which users are synced with OneDrive For Business?

I took everyone in my company and redirected all of their profile folders to their individual OneDrive for Business folder, so that every file they have gets automatically synced/backed up.

I think 90% of users are now set up this way since I had to do it by hand at each laptop.

Is there anywhere in the Office365 admin portal that I can bring up a table of all the users, and perhaps how much storage they are using in OneDrive for Business, or number of files they have? That would make it very obvious who I haven't migrated yet. At least if I could see who has a OneDrive for Business drive created would give me a hint.