What would be a node.js templating library that is similar to Jinja2 in Python?
The ejs is the npm module which you are looking for.

This is the name written in my package.json file --> "ejs": "^3.1.3"

EJS is a simple templating language that lets you generate HTML markup with plain JavaScript.(Credits: Ejs website)
Templating library in node.js similar to Jinja2 in Python?