Oddly enoght those are now called the "bring attention to" element [1], the "idiomatic text" lement [2], and the "unarticulated annotation" element.

1: https://developer.mozilla.org/en-US/docs/Web/HTML/Reference/...

2: https://developer.mozilla.org/en-US/docs/Web/HTML/Reference/...

3: https://developer.mozilla.org/en-US/docs/Web/HTML/Reference/...