If I started to create a WordPress theme today, I would choose Atkinson Hyperlegible as the default font.

What makes it different from traditional typography design is that it focuses on letterform distinction to increase character recognition, ultimately improving readability.

I would put accessibility as the highest priority, and choosing a font that works well for most users is crucial.

To be fair, the only guarantee I have that the font functions well is that it comes from the Braille Institute of America; by any means, I'm not a typography expert.