Intermediate, maybe advanced beginner: stripes, but minimal shaping

Chest
cm 56 (61, 66, 71, 76)
in 22 (24, 26, 28, 30)

Ella Rae DK Merino Superwash yarn
color A 2001-Twilight Heather 2 (2, 2, 2, 2)
color B 2016-Caterpillar Heather 1 (2, 2, 3, 3)
color C 2013-Seaweed Heather 1 (2, 2, 3, 3)