title: Compare multiple lists and return most frequently occurring number column-wise (most common value by index)
body: <p>I have three lists:</p>
  
  <pre><code>list1 = [1, 5, 5, 4, 2]
  list2 = [1, 4, 5, 3, 4]
  list3 = [2, 5, 4, 3, 4]
  </code></pre>
  
  <p>I want to return the most occurring number in each column so for example:</p>
  
  <ul>
  <li>Column 1 will return 1 since there are {1, 1, 2} and 1 is most occurring</li>
  <li>Column 2 will return 5 since there are {5, 4, 5} and 5 is most occurring </li>
  <li>Column 3 will return 5.</li>
  </ul>
  
  <p>For these lists, I want to get <code>[1, 5, 5, 3, 4]</code>.</p>
  
  <p>The list will always have equal length. </p>