How to tell Potatoes apart?

A couple of days ago I was reading a story by @BittersweetPotato thinking she's @NerdyPotato and I was typing a comment in my head then I realized she's actually @BittersweetPotato. I was like why is @NerdyPotato going to that country up north aswell! Is that where all Potatoes meet up? 🤔

And today I saw a meme by @NerdyPotato and I thought he was @BittersweetPotato and I commented accordingly 😅

And just now I discovered that there's another member called @Potato 🤔