Who played Randall Pearson in 'This Is Us'?

Who played Queen Elizabeth II (seasons 1–2) in 'The Crown'? In which TV series is Queen Elizabeth II (seasons 1–2) a main character? Who played Jack Pearson in 'This Is Us'? In which TV series is Jack Pearson a main character? Who played Earn Marks in 'Atlanta'? In which TV series is Earn Marks a main character? Who played Issa Dee in 'Insecure'? Who played Eleanor Shellstrop in 'The Good Place'?