BUT! They missed some of my favorites! Onions, bulb fennel, rutabaga, ANY summer or winter squash or pumpkin (tromboncino is excellent!) large radishes (daikon works REALLY well!) the pretty colored beets (yellow, cylindrica, and OH MY Chioggia beets come out beautiful!) cauliflower cores, Armenian cucumbers come out really cute (they have crinkly edges!)
Onions are my favorite decadent thing to spiralize, our favorite recipe is to spiralize a whole onion, cut it into manageable lengths, add chopped fresh tomatoes and herbs, then bake it for just long enough for the onions to soften (10 mins, at most) and sprinkle with cheese. Is it pasta? Is it a salad? Don't know, don't care, it's amazing!