which one to rank up? jack, shocker, sentinel

fateff

I have these three 7* champions: jack, shocker, sentinel
which one to use saga 1-2 rank up gem?
I am going to use this ranked up champion in autumn of agony cassie lang mission as well - tech & villain

shield311

Shocker

captain_rogers

Shockerrr

Oakenshield

Is your shocker awakened? If so him. If not I’d do Jack.