Mace Windu - moving
Obi-Wan Kenobi - moving fast
Darth Sidious - waiting
Yoda - waiting
Qui-Gon Jinn - moving
Wow, two many variables. How about we say they start out spread out from each other at least 1000 ft. from the farthest person. And we're assuming the Jedi can fight each other two, right?
If that were the case Yoda and Sidious'd both pretty much stay where they were and wait to fight till they needed to. Dooku, Luke Qui-Gon and Mace wouldn't rush off to find someone right away. Maul, Anakin, Grievous and Obi-Wan'd rush off pretty fast and'd run into one another. Lets say first Maul runs into Obi-Wan and Grievous and Anakin runs into Dooku. Maul and Grievous take on Obi-Wan. They are forcing him back when suddenly Maul betrays Grievous and stabs him. Grievous is out. Maul fights Obi-Wan. Anakin and Dooku fight. Anakin manages to overwhelm him like he does in ROTS. Meanwhile Maul gets in some good moves on Obi-Wan, then gets overconfident and loses (I assume this is ROTS Obi-Wan and Anakin).
Next Anakin meets Mace. A fierce duel ensures. Obi-Wan finds Luke. Anakin's already tired and Mace hasn't fought yet and kills Anakin. Obi-Wan's already a bit tired and Luke makes him a bit more so but he beats Luke. Then Obi-Wan meets Qui-Gon. While normally Obi-Wan'd win without much trouble he is tired and it's pretty close. While they are fighting Mace stumbles upon them. He stands still and watches. Obi-Wan manages to win and then Mace charges him and beats him before he has a chance to catch his breath. Next Mace finds Sidious. They fight. Sidious wins. After waiting an hour to catch his breath Sidious goes to find Yoda. They fight. On Mustafar this could be close but Yoda ends up winning.