Which of the stored icloud.com passwords should I use?

I'm trying to login to icloud.com on my Windows 10 PC (using Firefox), but it won't accept the password. Looking in the Passwords app on my Mac, there is a stored password for iCloud, but this does not work. There are also different passwords stored for appleid.apple.com, idmsa.apple.com, iforgot.apple.com and daw2.apple.com. Some of these have repeated entries, for example, there is one password stored for idmsa.apple.com with my email address as username (and this password is the same as the iCloud one), and a different one for idmsa.apple.com with no username.

Which one should I use? It is apparently not the one with the most recent modification date, and the account keeps getting locked when I try more than two.

Of course I could reset the password and start over, but I don't want to create a situation where I can no longer log into my Mac (because I've changed iCloud to a password that I don't remember.)