Eons ago I know a guy got a new Ranger (pre 2011) and like two weeks after he got it he noticed the interior door panels were different colors, IIRC one was a darker gray than it was supposed to be.
So not really unheard of.
My Ranger has two (2) left hand stalks, I can't imagine the moaning when they came out lol.
For the first couple years the horn was even on the turn signal stick.
We just catch it on the other end.
For us it is rail to kansas city and then truck 3 hours up to here.
Dealer has said the truck side of is very unpredictable.
My guess I'd the later builds ended up parked closer to the building... so they started with them.
Or they had fewer/easier modules to replace than the earlier ones.