Dart

designed by Lars Bak and Kasper Lund and developed by Google, remains a strong choice for anyone looking into cross-platform development, especially with its integral role in the Flutter framework which is renowned for smooth and natively compiled applications.

I have been using Dart since my freshmen year of college and the language is the simplest one you could ever use. It's a mix of all the popular languages (C++, Java, JS). The best thing I like about is that it has a strict type checking and if incase I wanted to make a switch to other languages, I wouldn't have to struggle to learn their syntax as it really seems very similar