His rant-y EWDs seem to be the only ones people know. But his others go into much more detail about what he thinks and why. And while he didn't (to the best of my knowledge) directly create any language, he did implement an Algol 60 compiler and was involved in language design efforts throughout his life.

He helped create the ideas of Structured Programming, which most of us now take for granted, since pretty much every language in popular use these days are based on these ideas.

Dijkstra co-created a rather influential language called Algol 60[1]. It and its immediate descendants are still used in scholarly CS work because it's so good for clearly describing algorithms. Past that, the influence of Algol 60 on virtually all modern programming languages is hard to overstate.

[1] https://en.wikipedia.org/wiki/ALGOL_60