I swear, the first several times looking at this, I could barely tell the difference. But now I notice that on top of boots vs shoes, his pants are light grey vs dark and that's not actually the same jacket (I thought it was the same jacket zipped/unzipped, but one is more of a blazer and one looks like an outdoor jacket.
I am hoping if they show more official artwork, that the minor age difference and barely noticeable palette change/design tweaks are, well, actually noticeable. I don't understand why we need 4 extremely similar variations. I know I'm being kind of harsh, but it seems like the design could've been worked on a bit more. Maybe the older version could've had sharper eyes, a more noticeable height/build difference, or his hair pushed back or something that would make this mysterious concept pay off.