Yeah, reading that you would be surprised to learn that the lower stage of every launcher flying or in development doesn't use liquid hydrogen[1].

(1: OK Ariane 5/6 but most of the thrust is from solids)

>flying or in development

You've forgotten about ULA's Delta IV and Delta IV Heavy, NASA's SLS, and JAXA's H-IIA and H-IIB.

Delta IV Heavy is currently the most capable rocket in the world and uses liquid hydrogen throughout (no solid boosters).