I feel like I'm missing something, but how can I login to different Medplum projects with the same account/login? I want to run some staging project for testing etc separate from production but I (and my team) should be able to access them with the same login. Is this possible?

Indeed you can. If you click on your name and "Add Account" you can log into both and toggle. Here's an example from my test environment. https://cdn.discordapp.com/attachments/1447647001071194263/1447650146966962387/image.png?ex=69439983&is=69424803&hm=e7e36c007c42e429977f51f1570936899952ec77db27b403602a9498355c9e49&

Does this work the same with google login? Seems like maybe not. I click switch account and select my google login and just get sent back to my project dashboard

Great!

Follow up question here, I tried inviting our practitioner and he is also not able to see the project. I added him as a non-admin, project scoped. He gets the email, clicks on the sign up link, but when he logs in it just sends him to the test project he created and he doesn't see the production project I added him to in the project selection when clicking switch account.

Can you instruct them to try logging out of all projects and then attempting to sign into a URL like this: https://app.medplum.com/signin?project={PROJECT_ID} But of course replace with your specific ProjectID?