I tend to have a body of knowledge that is miles wide and inches deep. Although I have narrower areas of deeper interest, I tend to have at least a superficial knowledge of at least some significant personalities in areas that are not my special interest, including time periods before or after when I was interested in something.
I had assumed John Prine was pretty well known, and that his name would at least sound familiar to most people. Especially people who are interested in music (even if not Prine’s form of folk/country), AND from the Chicago area (Prine is from west suburban Maywood and had his first fame in the Chicago folk scene.) Most recently, at one point I thought his name was spread when he was (at least at the time) one of the most famous people to have died from covid.
I understand how one’s views as to “what everyone ought to know” is skewed by one’s personal experience and preferences. My wife and I have long been fans of his, we own several of his albums, and we are both musicians reasonably familiar with traditional/folk/country music.
The other day we were playing in a classical ensemble we host at our home. For whatever reason, we mentioned JP, and neither our 2d fiddle nor our violist had ever heard of him. That struck me as odd, as both are lifelong Chicago area residents, and both have long been involved in music (tho more classical and opera.) But even tho I do not favor opera - or rap, for that matter - I would imagine the names of some of the most prominent practitioners of those styles would at least ring a bell for me.
Subsequently, I asked a young couple in their mid-30s, and a guy of about my age whom I know is into music (gospel and R&B), and neither of them had heard of him either. Always interesting to have it made clear how different peoples’ bodies of knowledge are.
So, do you have any instances - in the arts/politics/whatever, where you realized not everyone recognized what you thought to be a common, household name? Feel free to comment on other peoples’ suggestions as well. Have YOU heard of John Prine? Not like his music or be able to hum a tune. Just if someone said his name, you say, “Oh yeah - he’s a musician, right? Maybe plays guitar?”
I bet there are a great many examples of people who are hugely popular on-line, or in currently popular movies or music whom I might not recognize. Maybe give some examples of someone you think is really well known, and see if everyone else has even heard of them…