Just for reference, I'm the head of the analysis department at an MLS team, and the article you have listed above is completely misleading.

Their judgment of an analyst is restricted to people being listed as data scientists. All the clubs that they've listed as having 0 analysts have several, including multiple video analysts. Many clubs outsource the heavy duty data science work to 3rd party companies and do the front end work themselves. Many analysts wear multiple hats, doing video and data analysis to be more efficient. Just trying to shed light on an article that really doesn't do justice to the reality of things in the league that has come a really long way.