IME, most of the characters possess one or more of the following traits: brown hair, Human, male and Fighter class.
That's because paladins are not available yet...
I just don't think social media is a good reflection of what most players choose, it's rather a reflection of what is popular on social media. E.g. if you look at that Astarion seems a beloved character, whereas I would not be surprised if he was actually the most disliked & killed companion.
