These vaguely Roman faces do start to look alike after a while, but if you stare at them for a little while longer yet, the bits that make them unique do begin to pop out.
Here are some of the details that will appear after a quick stare:
One family that does come fairly close to the sample is Stone Serif, but that doesn't include any condensed varieties. It might be tempting to take the existing bold and apply a bit of squishification, but that leaves kind of an icky result:
For the original poster: have you tried contacting the people who run that blog and asking them?