Make the quick yellow pickle: toss the daikon strips with the rice vinegar, allulose, turmeric and a pinch of salt. Set aside for at least 20 minutes, then pat dry.
Cook the cauliflower rice in a dry nonstick skillet over medium heat for 6 to 8 minutes, stirring, until tender and completely dry. Cool for 5 minutes, then mix in the cream cheese, half the sesame oil and 1/4 teaspoon salt.
Pour the beaten eggs into a lightly oiled skillet over low heat to make a thin omelet. Cook until set, flip briefly, then cut into long 1/2-inch strips.
Blanch the spinach for 30 seconds, rinse in cold water and squeeze dry. Season with the remaining sesame oil and salt. Sauté the carrot for 2 minutes until just soft.
Lay a seaweed sheet shiny side down on a bamboo mat. Spread a quarter of the cauliflower mixture thinly over the bottom two thirds, leaving a 1-inch strip at the top.
Line up a quarter of the egg, spinach, carrot, pickled daikon, ham and cucumber across the middle. Roll firmly away from you using the mat, pressing as you go. Dab the top edge with water to seal.
Brush the roll with a little sesame oil and sprinkle with sesame seeds. Use a sharp, damp knife to cut into 1/2-inch slices. Repeat with the remaining sheets.