I also use a label maker to fix the login credentials for shared computers on the backside of their keyboards.

I suspect people like me are the reason my firm is trying so hard to migrate to single sign in instead of dozens of unique passwords which require updates

That's not terrible, depends on the level of physical security you have

> which I then print and post on the wall by my monitor.

That's pretty bad any any passing person or camera can see them

> Both. I like to keep a file in notepad updated with all my corporate passwords

That's the worst of your 3 methods though, but for many attacks is more secure in practice than using chrome/google sharing, especially if the file isn't called "password.txt" or similar.

I absolutely loathe needing to know more than one password per sector of my life - ideally I'd prefer a password manager as they're more flexible.. but SSO is alright too.