C++ is the op programming language can be used in Blockchain and there employee payment is more higher than in other software company.
Rest will follow like this and still more will be invented in the future.
And to further discuss each language, I guess I'm just gonna include the link here. It's helpful thought. The pros and cons were also included in here https://dev.to/duomly/which-programming-language-is-the-best-for-blockchain-all