Just 0.02 sorta the other way around...
When my father passed, he had a printed list of passwords that were outdated. It was clearly from an excel file, but I couldn't find the source of it. He wasn't too with it for his last years, following a stroke, but he tried to do everything himself, aside from some questionable financial advisors. My parents had a wall between them with my father doing all of the finances. He commented that I was smart and could figure everything out. I can't count how many utterly frustrating hours I've spent trying to keep my mother's bills being paid, meeting his financial advisors, straightening out accounts, moving accounts and assets to my mother... And she needed other kinds of support.
His branch of a bank closed so he moved his safe deposit box to a new branch and when he did that, nobody else was on the new account and the whole thing was forgotten about until he passed. Just figuring out what that meant and what options there were and what I had to prove and to who - multiple calls, consulting with a new lawyer I had to find, and visits to the bank.
Having only a list of accounts is pretty crappy to dump on someone who doesn't know what the accounts were for or how they were being used or what your notions about of it is. We don't realize how many personal decisions we've made over the years and what might seem logical to you is completely different than what someone else might do. I never trusted financial advisors and his world revolved around them. Index funds? He never touched one.
Suddenly I'm looking at all these questions that I know nothing about. What medicare plan and why? And is some other company connected to a previous employer somehow paying for some part of their medicare? WHY

Are there receipts for those gold coins somewhere? Why do you have an advisor who picks stocks for you? How do I cut off your FoxNews products that are billed monthly?
My father passed out of the blue, but after 8 days in the hospital and being on a respirator twice. It was horrible and then I immediately had to be his substitute for my mother. I've heard people talk about their passing as if it will be a party and a windfall for their heirs. It isn't, so the more information and narrative they have, the better. If your assets are simple, it would be a short narrative. If they're complicated, then it's even more necessary.
As far as the accounts, passwords, contacts, etc. I'd suggest having at least two sets of everything using different security to ensure that your heirs, executor, personal whatever can get all of the information they're needing. Family often assumes that family with take these roles, but consider having a bank serve as executor and having preparations ready. If you don't have a full estate plan, think about having your desires for what to do with your remains, services, etc. all written somewhere. I was lucky and 2 days before his last trip to the ER, my father indicated that he wanted to be cremated and didn't want any services and some notions of having his remains buried that I still have to look into.