In which TV series is Eleven a main character?

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'? Who played Alexis Rose in 'Schitt's Creek'? Who played Joyce Byers in 'Stranger Things'? Who played Steve Harrington in 'Stranger Things'? In which TV series is Steve Harrington a main character? Who played Dustin Henderson in 'Stranger Things'?