EA is overwhelmingly white, male, upper-middle-class, and of a narrow range of (typically quantitative) academic backgrounds.
Though these characteristics are over represented in EA, I think one should be careful about claiming overall majorities. According to the 2020 EA survey, EA is 71% male and 76% white. I couldnāt quickly find the actual distribution of EA income, but eyeballing some graphs here and using $100,000 household income as a threshold (say $60,000 individual income) and $600k household upper bound (upper class is roughly the 1% top earners), I would estimate around one third of EAs would be upper middle class now. But I think your point was that they came from an upper-middle-class background, which I have not seen data on. I would still doubt it would be more than half of EAs, so letās be generous and use that. Using your list above of analytic philosophy, mathematics, computer science, or economics, that is about 53% of EAs (2017 data, so probably lower now). If these characteristics were all independent, that would indicate the product of about 14% of EAs would have all these characteristics. Now there is likely positive correlation between these characteristics, but I believe by definition that with the numbers above, it canāt the exceed the 50% upper middle class, even if all of those happen to be male, white, and those majors.
Though these characteristics are over represented in EA, I think one should be careful about claiming overall majorities. According to the 2020 EA survey, EA is 71% male and 76% white. I couldnāt quickly find the actual distribution of EA income, but eyeballing some graphs here and using $100,000 household income as a threshold (say $60,000 individual income) and $600k household upper bound (upper class is roughly the 1% top earners), I would estimate around one third of EAs would be upper middle class now. But I think your point was that they came from an upper-middle-class background, which I have not seen data on. I would still doubt it would be more than half of EAs, so letās be generous and use that. Using your list above of analytic philosophy, mathematics, computer science, or economics, that is about 53% of EAs (2017 data, so probably lower now). If these characteristics were all independent, that would indicate the product of about 14% of EAs would have all these characteristics. Now there is likely positive correlation between these characteristics, but I believe by definition that with the numbers above, it canāt the exceed the 50% upper middle class, even if all of those happen to be male, white, and those majors.