Sweet potatoes and yams
They store well all year long, so you can pretty much always eat these tubers.
You can use turnips to make a lighter version of potato au gratin, if that's something you feel like you need to do.
Butternut squash, acorn squash, spaghetti squash, and myriad others all qualify. The bigger the squash the better when it comes to flavor.
Carrie Dennis is a writer for Thrillist Media Group and thinks sunchokes are the next kale. Heard it here first, folks. Follow her on Twitter: @CarrrieDennnis.