Which Hall of Fame quarterback went undrafted and once stocked grocery shelves before starring for the Rams?

In which round was Joe Montana drafted in 1979? In which round did the Seahawks draft Russell Wilson in 2012? In which round did the 49ers draft Brock Purdy in 2022? Brock Purdy earned which nickname as the final pick of the 2022 NFL Draft? Which Cowboys quarterback went undrafted out of Eastern Illinois? With which overall pick was Jerry Rice drafted in 1985? In which round did the Steelers draft Antonio Brown in 2010? In which round did the Seahawks draft Richard Sherman in 2011?