A person’s Word Profile is unique. As you learn to speak and get used to speaking a certain way, you gravitate towards certain words more regularly than others. This profile changes depending on the context of where you are in life and how you let life affect you. In stressful situations you can choose aggressive words, in one-on-one conversations you pick words that signal your shared history with the person, when talking to a crowd of people you choose words that elicit a strong leader role, when talking to a specialized crowd of peers you pick words that only make sense to that crowd because the context is already shared amongst everyone there.
You can find out the Word Profile by finding a person’s word choice when in similar circumstances and how often those people will gravitate towards certain word. You can also go deeper into grammar structure, sentence length, topics and topicality of discussion, but there are limitations to doing this based on how I got my data through YouTube’s subtitles.
What I went looking for was the distinguishing Word Profile characteristics between the Game Grumps channel and Markiplier’s channel, both because they talk a lot through their videos and because they have a substantial collection of videos with a different cast and they have seemingly similar temperament though play primarily different games.