You know, in some ways, I think it would be easier. We always get this vision of what people look like in our heads while we're engaging with them online. What I envision is rarely ever right or even close to being right. I think if we were all wearing masks, it would force us to listen to the words people chose more and their opinions instead of making a quick judgment based on a cursory glance. To that end, I think I'd recognize quite a few folks.
If we're talking purely about visual identification... maybe you. Probably you. That's about it.