Dawn and Ryan were from the Pearl Necklace episode, PPF.

Good idea for a topic. I agree with the ones you listed above. Retina and Tim would've definitely won if it was the reverse order of players. Retina was just slow, but she would've fared better as the frontrunner. Tim was fast and definitely should've gone in second. They were the only team I can see on your list that would win.
Here are more:
Jim and Kristen, Polynesian Girl: Kristen was not a bad player, she was just kind of slow. If she went in first, she would've been taken out rather quickly and Jim the Mechanic would give us the first bottom of the central shaft win ever.
Kerry and Josh, Cracked Crown: Normally, I would not even send Kerry in the temple because she was so slow. But since this run had a temple guard layout where they would've been taken out early, I would highly suggest this strategy. Josh was definitely fast and they would've reached the Cracked Crown for sure if they reversed orders.
Tara and Danny, Sir Edmund Hillary: I think you mentioned this before, but I think the Silver Snakes would've won if Tara would've went in first. Tara would've started in the Cave of Sighs and clear a path all the way to the Shrine. Danny, who was also fast, would race in and grab the Medal with a little more time AND use the Troubled Bridge. And this team would've won.
Fred and Ron, Anne Bonny: This one should be obvious why. Ron was slow and a lost cause. The layout was easy and Ron would've been taken out early too. And Fred should have scored a win with a lot of time.
John and Tia, Golden Cricket Cage: This one might sound a little silly, but I think this run might've been slightly better if John went in second. Only because he was the one that covered all the rooms in their run. I know they would still suck and not come close, but it would be better than watching these two running through 4 rooms.