Need Help with identification...

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Who are these primals?? I don't remeber ever seeing the red one in the back?? whats is the variation count on him anyways?? i've never seen the Clear one before?? is there a lucky draw variant color too??
I know of these ones only:
Robot Masters Optimus Primal
Original Optimus Primal
10 Anniversary Reissue Robot Masters Optimus Primal
10 Anniversary Reissue/Reborn 2 Pack optimus Primal
Burning Optimus primal Robot Masters
Transformers universe Optimus primal
Denki hobby Black optimus Primal Repaint
Cybertron, kinda stays in his own version as well as the reimagined Optimus primal..
I'm talking about original and Robot Masters Variations how many are there??
who is who in this picture..???

Who are these primals?? I don't remeber ever seeing the red one in the back?? whats is the variation count on him anyways?? i've never seen the Clear one before?? is there a lucky draw variant color too??
I know of these ones only:
Robot Masters Optimus Primal
Original Optimus Primal
10 Anniversary Reissue Robot Masters Optimus Primal
10 Anniversary Reissue/Reborn 2 Pack optimus Primal
Burning Optimus primal Robot Masters
Transformers universe Optimus primal
Denki hobby Black optimus Primal Repaint
Cybertron, kinda stays in his own version as well as the reimagined Optimus primal..
I'm talking about original and Robot Masters Variations how many are there??
who is who in this picture..???