I'm sorry to sound dense, but how do you know these four people are all men?

I don't think "dense" is the right word choice. I remember my parents saying..Eleanor R was one ugly woman that looked like a man , but never heard them say she was not a woman. This is where one has to decide something for themselves. Type in your search engine Val-Kill Eleanor close personal friends. Or look at the copyrighted images on this site:
https://www.alamy.com/stock-photo/anna-eleanor-bsloc.html.

Maybe you might come to the conclusion that the TG agenda has now come into full fruition of turning the last two generations into acceptance after a century or who knows how long before? Mary Todd Lincoln is looking kind of interesting in her portraits. All the daguerreotypes and early photography of my gg grandmothers (though they may have lived a hardscrabble existence) still look like women and not football linebackers.

I understand now why men need to grope women. Have to be sure they're talking to a woman. Before flirting better be sure. 😁

Remember that little scandal with Pres. Trump with the remark he said with Billy Bush about grabbing them by the pu$$y. That is exactly what he meant. That is the only way to find out if they are male or female.