Broccoli: first crop slightly discolored (try fertilizing mid-way), second crop solid, but all headed up the same week. Late crop covered with insect screen, but lots of cabbage worms matured under the screen. No noticeable lasting damage from the worms.
Brussels sprouts: grew 3 varieties due to old seed (difficult to tell apart) some didn’t mature, aphids only on leaves.
Cabbages: early green did well (red variety was small), late varieties good (except Aubervilliers hardly headed up). consider covering spring cabbage bed with agrofabric when transplanting seedlings.
Cauliflower: early crop variety did well (some headed up very early), late crop didn’t all mature.
Kohlrabi: good way to use space in center of zucchini bed, but difficult to harvest, try starting as seedlings or maybe making a raised-bed, like leeks?