Im surprised Chael didn't get it since he is in the 205lb division, unless Jones is really trying to avoid Chael.
Chael was just an emergency last ditch effort to save the 151 card. With the fight being moved 4-5 weeks from now, there is zero reason for Chael to be in this fight.
As for Lyoto, this makes sense for him to wait and have a full training camp. He is already in line to get a shot next, so him waiting shouldn't cause him to much time till he gets his shot. That is unless his situation turns out like Rashad's.