Clocktower.fyi

The Storyteller cannot gain the Evil Twin ability if the Plague Doctor dies.

If an Evil Twin ability comes into play through the Hatter, you should wake each twin individually to show them who their twin is and what character it is. Remember that the good twin doesn't have to be alive and generally shouldn't be if this happens in late game as this can mean the good team cannot win.

The Steward can learn the good twin, but this might not be fun depending on the players and other info involved.

It's very rarely fun to make the Politician the good twin as they can campaign for their own execution, never mentioning that they're a twin, then win the game with evil as a result (it's pretty hard to argue they weren't most responsible in that situation!)