Maybe I’m alone in this, but lemmy kind of expects you to have multiple accounts (at least when .world goes down), so knowing which one I’m using when writing a comment would be helpful (even if switching on the fly wouldn’t be feasible).
You’re not alone. Sync for Reddit would even let you switch accounts temporarily while posting a comment. Though, oddly, I dont think it displayed which account was currently logged-in before you made the switch.
I would often use the temporary login feature even when I thought I might be logged in as the user I wanted to comment as because I needed to be absolutely sure I was using the right account.
Use different themes for each account make sure the accent colors are distinct and that’s how I’ve solved so far
Thunder has this.