Typst is really good for this. The syntax takes a little bit of getting used to but on the whole I’ve had a lot of success producing contracts and other legal documents with it. I tend to assemble the input files using a templating engine and then use the compiler in a subprocess. The compiler is very fast and the development is pretty active. The output is much easier to manage than with packages like reportlab.

the search term you need is "reporting tool", of which there are zillions:

https://en.wikipedia.org/wiki/List_of_reporting_software

Generating a XeLaTeX source document, then compiling it to produce the PDF.