Where I work we still use Software AG's Natural for mainframe programming. It's not really a bad language for what it is (very much focused on database programming). The main limitation is that they never created or provided great mechanisms for something like a standard library, so we do a lot in Python now, and occasionally other languages.

From my perspective, the standard libraries of languages like Python and Java, as well as effective package managers such as pip or npm or cargo, have raised the bar so high that it is difficult for old, specialist languages to compete in most cases. Although the security problems of the package managers give me some pause.