How to find the number that appears most often in a list (the Mode of a list)

I have a list that contains a list of 5 string values. I want to find which value is repeated most often and place that value into a single line text field

Example

List1 = Learning,Learning,Shaping,Leading,Learning

In List1 the value “Learning” appears most often, I want this value to be input into a single line text field named “Dominant_Value”

In case where ther is 2 or more items that appear the exact same time

List2 = Learning,Learning,Shaping,Leading,Shaping

In this case Both Learning and Shaping Appears twice

In this scenario I want the field “Dominant_Value to be input with the value “mixed” instead

I have noticed there is a median list function but no function to fin Mode

How can I do this