------
## 最终结论
```python
def common_in_nested_lists(nested_lists):
    # Initialize result set with the first sublist
    common_elements = set(nested_lists[0])
    
    # Iterate through each sublist and update the result set
    for sublist in nested_lists[1:]:
        common_elements.intersection_update(sublist)
    
    # Return the result as a list
    return list(common_elements)
```