I wouldn't say all of them either as Night Haunter didn't really like anyone that much. But and a big one, is that by far Sanguinius was loved by most Primarchs, and the runner up would be no where close to him. Not even sure who the runner up would be, .. Vulkan?
I don't think its that much of a stretch... i mean there is plenty of evidence of Angron's love for .... uh.... his chain axes..... Yeah nevermind
Vulcan! Vulcan all the way. The guy bred a chapter that actually cares about the people they are defending. He is fine doing the jobs that the other chapters deem "beneath them". 10/10 would fight with him any day.
Sanguinius , it really should have been him.. this guy had everything he was brilliant, even his death was brilliant, his best buddy was horus, he was probably horus' biggest supporter and chief advisor. but it was sanguinius' ability to get along with everyone. yes he was the Angel. he was also pretty good at fighting, and the battle of terra, Sanguinius looses his temper, picks up the greatest blood thirsty of khorne snapps him over his knee and throws him at the trators, looks over at angron and says 'your next bitch ! a few have posted about sanguinius not being liked.... everyone liked/got along with sanguinius well.. angron did not like anyone except maybe lorgar just a tiny bit? blood angels and world eaters held a rivalry as the best attack force(maybe for angron to have a rival ? perhaps the nearest thing to like ?) angron liking sanguinius was never going to happen. but to say fulgrim didnt like sanguinius well thats wrong, fulgrim in several books did like sanguinius. fulgrim would have seen sanguinius the only brother that has similarities and traits to rival perhaps better his own. often agreeing and standing together during debates/important advents. these 2 spent a lot of time together and did get along.
Angron hated the favored sons. He hated the others too, but he hated the favorites and mr perfects the most.
Lion. Because his motivations are so mysterious Alpharius and Omegon took tutoring from him on that subject
Roboute Guilliman, he more or less single-handedly held the empire together after the Horus Heresy. "The warrior who acts out of honour cannot fail. His duty is honour itself. Even his death - if it is honourable - is a reward and can be no failure, for it has come through duty. Seek honour as you act, therefore, and you will know no fear." — Primarch Roboute Guilliman
