Weakest Strawhat who could solo the pre-skip Strawhats?

[Warmmedown]

Takes place in Sabaody.
Rd 1: fighting them all together
Rd 2: fighting them sequentially, in the order below.

Franky vs Luffy, Zoro, Nami, Sanji, Usopp, Chopper, Robin, Franky, Brook (almost forgot Brook)?
Chopper vs?
Brook vs?
Nami vs?
Robin vs?
Usopp vs?

 

[SSJ2]

Maybe Brook? None of the weaklings have Haki and wouldn't be able to damage Luffy, but Brook has a sword at least.

 

[Future Warrior]

I agree with Brook. He low diffed an opponent that the Straw Hats would have struggled to beat together.

 

[Warmmedown]

1. Do you think if they could hurt Luffy with punches/kicks, Chopper, Robin or Franky could beat everyone?

2. And even if Luffy can't be hurt due to rubber, could any of those non-Brook weaklings still destroy the crew in a group fight? Like be so fast and strong that they kill the entire crew before Luffy can protect them?

3. What about Usopp vs Luffy, one-on-one and with prep (and then fights everyone else one-on-one)? He hurt him a little pre-skip with the bombs and reject dial - does he have more ways to seriously hurt him now? He can definitely take a few more punches now, to have more opportunities to hit Luffy with projectiles and traps.

 

[Future Warrior]

Franky’s lasers could absolutely kill Luffy. If the other straw hats had some method then they’d win too.

Usopp with a shit ton of prep time could see a scenario where he’d win against Luffy.

 

[SSJ2]

Franky and Robin would be able to win if they could hurt Luffy imo. Chopper I'm not so sure. He got a few hits in on Queen but I can't recall him doing anything else.

Maybe Franky could beat Luffy with his light beam. Nami could probably take out the whole crew using Zeus as well.

Usopp I really have no idea. He managed to stall one of Kaido's officers but couldn't do any real damage to him. His post timeskip weaponry has never seemed all that impressive to me to the point where I can barely remember any of it.