Heres my gravel bike build, 650b wheelset with a S5 (5 speed) Sturmey archer hub, yea, it weighs 30 pounds, but I love it, 41c tires, set up tubless just for the juxtaposition between 1968 tech and modern tech, plus tubeless is pretty sweet... *ducks!*...
And man does that Campy crank and 53 tooth ring look so good tucked under the chainguard!