DuckDB also runs in Excel, by the way, via the free xlwings Lite add-in that you can install from the add-in store. It’s using the Python package and allows to write scripts, custom functions, as well as use a Jupyter-like notebook workflow.

If you start with Excel, I'll counter with Postgres: https://github.com/duckdb/pg_duckdb. I haven't found the time to check this on one of our installation, though.