I think there are different niches, pokimane belongs to the niche of teen simps (to which most of the internet consumers belong). But there are also other niche

I think there are different niches, pokimane belongs to the niche of teen simps (to which most of the internet consumers belong). But there are also other niches: comedy, travel, music, gameplays, competitive gameplays, funny gameplays, politics, science, etc. Where looks aren't everything... In other niches, you can grab the public's attention with attractive thumbnails.