Apart from the line down the nose, and the slightly over bushy eyebrows, that could be Son2. He doesn't grow the moustache and beard because his faither and bother both have them and he's not a fan, but that photo could be my son.
.....and I'm pretty sure our genetics are mainstream Scots/ Scots Irish (Himself's dad's side, five generations back they sold a farm in Ayrshire and bought a much bigger one in NI with the money, Son1 looks like Rabbie Burns...with long hair and a beard ) with a wee bit of Yorkshire.