There is no dietary option for weight maintenance that is both low in carbohydrate and fat. As a result, you should continue to eat the same foods as during the weight loss phase with one modification, you can experiment with food more. Still aim to keep your macro percentages pretty much the same at 70% fat, 20% protein, and 10% carbs to maintain ketosis.
Essentially, continue eating the foods you love, just feel free to try more foods. Use the Keyto to see how new foods affect your Keyto levels. Because you are fat-adapted, you might find that you can tolerate foods with slightly more net carbs.