Nick Foles

Oh, how easy it would be to forget the Chiefs did have another quarterback who eventually won a Super Bowl start for them. Nick Foles was a Chief in 2016, winning his lone start. Foles threw for 410 yards with three TD passes in KC.
Sports blog information from USA TODAY.
The Chiefs had 29 starting quarterbacks between Len Dawson and Patrick Mahomes, none taking them to the Super Bowl.
Oh, how easy it would be to forget the Chiefs did have another quarterback who eventually won a Super Bowl start for them. Nick Foles was a Chief in 2016, winning his lone start. Foles threw for 410 yards with three TD passes in KC.