I like to think that Fingolfin made a big point of making sure that all four of his kids got exactly the same amount of hugs.
He never made a big declaration of it or rubbed it in Finwe's face but it was rather important to him to not repeat that particular mistake
Perhaps there was one kid that he found slightly easier to talk to (maybe Argon since hes the first one to tragically die, or Turgon as they were both on the "stay in tirion" team during the debate) and though this never affected his actions he may have carried the slightest twinge of low level guilt for it