Choosing among graduate schools
First of all, congrats! I don't have a full understanding of your situation, and my field of study isn't the same, but these might be some questions which might help you rank your options:

What's your post-graduation plan? Do you plan to get a PhD or start working after you finish your MSc? Knowing what you want to do with the degree will certainly help you see joining which university/lab will take you closer to your goal.
It's a research-based MSc: how much do you know about the lab you are going to be working with? Have you talked to the PIs of those labs personally? Can you request a brief online meeting with the lab members? Are they happy with the lab culture? What are former students from those labs doing now?
In my opinion, the alignment of your research interests' and the lab's, and the lab culture are the most important.