I think XML is declarative , I am not sure though if you have the right answer could you please provide sources doing a project for analysis of programming languages. This information would be greatly appreciated.

XML is a programming language would be news to me. I only thought of it as what it was, the extensible markup language that served as a way to write something that might work across many systems.

https://www.google.com/search?q=explain+xml seems to tell us this and more.

Oh thank you no wonder I could not find anything about the programming paradigm I completely misunderstood.