Hi,
Version 0.5.2 of the Python markdown converter script called keep-it-markdown dynamically pulls Keep notes to markdown files along with Joplin front matter to preserve tags. This script does not require using Google Takeout for export. It runs on Windows, MacOS and Linux. You can also import markdown notes back into Keep.
Instructions on use are in the README.md file here - https://github.com/djsudduth/keep-it-markdown