The Most Similar Languages to Cantonese

1. Hakka, 2. Xiang, 3. Gan, 4. Wu, 5. Jin

The Most Similar Languages to Mandarin

1. Jin, 2. Xiang, 3. Gan, 4. Cantonese 5. Wu

The Most Similar Languages to Korean

1. Cantonese, 2. Gan, 3. Mandarin, 4. Finnish, 5. Hakka