I've tested the Beta (using a very long path instead of 'Rclone' becaus I can't figure out yet how I can add rclone to the PATH correctly, but that's another story.
config create thijstest2 onedrive config_type=url config_site_url=https://redacted.sharepoint.com/teams/redacted
WORKS!!!
So adding the full url works. Which is awesome!
I have to get back to testing this but I have no time until monday. I'll keep this post alive until then. and mark it as solved after some extra testing.
Thanks so much Nick!