[Mick]

Doug Williams 
Phil Simms
Nick foles

You are correct with Simms, who had the best single game ever at #1. Super Bowl XXI, he had a 150.9 passer rating. 
Doug Williams is #8, with a 127.9 passer rating in Super Bowl XXII.
Nick Foles wasn't in the Top 10.

Think Bay Area connections...

---

First three
Bradshaw
Montana
Young

First two
Bradshaw
Montana.

No clue lol

Interestingly, Terry Bradshaw had four of the top 10 ratings when his career ended, but rules changes (and better quarterbacks) pushed him further down the list. So he doesn't appear in the Top 10 for the single Super Bowls, though Mr. Bradshaw is #4 in career passer rating. 

Joe Montana is #2 with a 147.6 rating in Super Bowl XXIV. And #3 is Mr. James William Plunkett, Jr. with a 145 rating in Super Bowl XV. Steve Young was #6 with 134.8.

For career passer rating,#1 is Joe Montana with a 127.8 rating among his four Super Bowls. And Mr. Plunkett is #2 with a 122.8 rating among his two Super Bowls.

Steve Young didn't meet the 40 attempt threshold for career Super Bowl rating, and GOAT Tom Brady is just #8 in career passer rating at 97.7.

Super Bowl Leaders | Pro-Football-Reference.com

[Mick]

Doug Williams 
Phil Simms
Nick foles

You are correct with Simms, who had the best single game ever at #1. Super Bowl XXI, he had a 150.9 passer rating. 
Doug Williams is #8, with a 127.9 passer rating in Super Bowl XXII.
Nick Foles wasn't in the Top 10.

Think Bay Area connections...

---

First three
Bradshaw
Montana
Young

First two
Bradshaw
Montana.

No clue lol

Interestingly, Terry Bradshaw had four of the top 10 ratings when his career ended, but rules changes (and better quarterbacks) pushed him further down the list. So he doesn't appear in the Top 10 for the single Super Bowls, though Mr. Bradshaw is #4 in career passer rating. 

Joe Montana is #2 with a 147.6 rating in Super Bowl XXIV. And #3 is Mr. James William Plunkett, Jr. with a 145 rating in Super Bowl XV. Steve Young was #6 with 134.8.

For career passer rating,#1 is Joe Montana with a 127.8 rating among his four Super Bowls. And Mr. Plunkett is #2 with a 122.8 rating among his two Super Bowls.

Steve Young didn't meet the 40 attempt threshold for career Super Bowl rating, and GOAT Tom Brady is just #8 in career passer rating at 97.7.

Super Bowl Leaders | Pro-Football-Reference.com