Once the checklist is posted for this set, we can note the four variation cards for the 24 cards in the RPS Rookie Ticket subset.
I have figured out the four different variations for card #101 Sam Darnold.
Base: Ball in right hand preparing to throw, Red Jersey.
A: Carrying the football in left hand, Red Jersey.
B: Ball in right hand preparing to throw or tuck it away, White Jersey.
C: Carrying the football in right hand, White Jersey.
Hopefully there are more auctions like this one in the future to help us.
If anyone finds more out, post them here!