I like Jack's outfit. I'd like John's a bit more if he had Jack's black pants. I don't like how they made his hat leather in RDR2, and I hate Arthur's hat.
It's made of dried, cracked, scuffed up leather. It looks terrible. It would be uncomfortable to wear. No one would wear a hat like that, and no one does wear a hat like that.
And? It still looks terrible. His dad was an idiot for having it made. There's a reason no one wore leather cowboy hats historically, and nobody serious wears them today.