Other than Graphviz (can try one of its other visual editors[3]), other generic text to diagram tools/langs in this space are Pikchr[1] and D2[2].

UPDATE: Just realized that Vizdom here is not a new language, but a Graphviz editor.

[1]: https://pikchr.org/home/pikchrshow

[2]: https://play.d2lang.com/

[3]: http://magjac.com/graphviz-visual-editor/