I primarily use OneNote for keeping track of notes on procedures, help items, knowledgbase of sorts.

1. Onenote File Google Drive
2. Export Onenote To Google Drive
3. Link Onenote To Google Drive

You could export them via OneNote 2019 to make backups, but to sync your notebooks on Google Drive is not possible. Buy 100GB OneDrive for 2$ per month (or if you need Office, try finding a Microsoft 365 Single code on eBay or something like that, they can be very cheap). Example: In OneNote Click 'New' Select 'Other web locations' And select my Google Drive (any of the folders).

Is there any way to upload this to a Google Doc and keep it in sync?

I want all the info to be available in Google Drive, because others already have access, and because it's a huge pain to create/manage accounts SOLEY for OneNote use. (we are an all Google shop here, no O365 or Office at all)

I am open to 3rd party paid options as well. It is unlikely that Google Docs will be modified, so somewhat of a one way sync is ok.

Onenote File Google Drive

I hate to point this out... OneNote is an Office product.. so You DO use Office. (sorry, it's my nature).

If you are signed in to OneNote with a Microsoft or Office Account (Which I assume you are), you should simply be able to share your notebook to others via their e-mail address. No need for Google Docs in that case.

Click File -> Share

Export Onenote To Google Drive

Link Onenote To Google Drive

Even if you could simply save the data folder to Google drive and sync it, you would loose control of editing (any conflicts would lead to multiple versions of the same notebook).