Who played Alexis Rose in 'Schitt's Creek'?

Who played Moira Rose in 'Schitt's Creek'? In which TV series is Moira Rose a main character? Who played Johnny Rose in 'Schitt's Creek'? Who played David Rose in 'Schitt's Creek'? In which TV series is Eleven a main character? Who played Joyce Byers in 'Stranger Things'? Who played Steve Harrington in 'Stranger Things'? In which TV series is Steve Harrington a main character?