If you need a standard Western font that pairs well with the name, or Trajan Pro Bold are excellent choices for that historical monument feel.
: While its bold weight increases visibility, users should ensure sufficient contrast when layering it over complex backgrounds to maintain readability. font-weight CSS property - MDN Web Docs - Mozilla
to ensure the "aperture" and "bowls" of the letters remain clear. Variable Font Creation : For modern apps, you can define a Weight Axis
For a web-safe replacement of Ayuthaya Bold, use Noto Serif Thai with a font-weight: 700 declaration.