Write a Python lambda function that takes a list of strings and returns a list sorted by the last letter in the string. Return the list.
Example 1:
Input: ['Hello', 'World', 'Python', 'Programming']
Output: ['Programming', 'Hello', 'Python', 'World']
Example 2:
Input: ['Apple', 'Banana', 'Cherry', 'Dates']
Output: ['Banana', 'Apple', 'Dates', 'Cherry']