This has been around for a long time. I personally maintain all the information in the following format. I hope someone finds it useful.
https://lifehacker.com/organize-your-familys-essential-infor...
and what my family should know incase if something happen to me.
https://ussvicb.org/documents/What%20My%20Family%20Should%20...
Somethings like the above. I've added more info such as 2FA etc in a separate sheet and saved all QR Codes for all the 2FA in my Authenticator apps, and printed them and kept two copies of it in two different locations known to family members. Updates are added as additional sheets to the binder as new codes are added and as a practice, one full dump around a 6 months to 8 months is also added.
You never know what emergency might come in.