영국남자 Korean Englishman
One youtube channel on the list is 영국남자 Korean Englishman channel with 4.38 million subscribers. The owners of this channel are 2 British guys, focusing on the British reaction when trying Korean food or experiencing the culture. Their channel is so popular that it features Hollywood stars. Although it doesn't focus too much on academics, you can improve your English skills thanks to the native language of these two guys.
Link youtube: shorturl.at/tFIMY