Oh yes! I did know this. Ada and I think maybe C# support it. The problem is whether Ada is considered a modern language or not. In an earlier draft I included a mention of this, but then I realized that a lot of the companies that do COBOL migration, ALSO market migration services for Ada legacy code. You could look at last stable release (2016) and say yes of course this is modern, but by that measure COBOL is also a modern language (2014).
But thanks for including some detail, this was interesting.