How Can Two People Use The Same Youtube Account Without Using The Google Login

What options are available to me to either change the log in details for the YouTube account in order to keep my email and other Google products safe, but allow both of us full access to YouTube in order to upload/comment on YouTube?

Should we restart the account under a different name? Can we change the name to something else like a group account (if such a thing exists)?

I have tried to follow the help section on YouTube with little success; there doesn’t seem to be any straight forward answers and am hoping someone on here can help me out!

Thanks in advance as always.

PS: Yes, I have tried to “google it”