I used to grow Yukon Gold potatoes, but changed over a few years back to the Dark red Norlands.
I start onions from seed here in New England, in fact just made the first starting yesterday of the storage onions. I start them in March and harvest softball or larger size onions starting in late July.
Here's a couple links:
https://steemit.com/life/@goldenoakfarm/a-harvest-august-16-2019-goldenoakfarm