Could be used M-right or M-left to align paragraphs which are immediately below a list?

In a list, if pressing Enter, the next paragraph is aligned below the item of the list:
+ Item 1
  Text indented, belongs to Item 1.

If there are subitems, the text could be needed to be aligned below a superior item, and this must be done in a manual way:
+ Item 1
  Text indented, belongs to Item 1.
   - Item 2
     Text indented, belongs to Item 2.
  This paragraph is aligned below Item 1, but I think there is too much "friction" to achieve this. And the alignment would be different if the bullet was "1)"

Best regards