How to handle umbrella/multiple/associated logins?

Example that I just ran across that finally led me here is the merger of disney+ and hulu. I used to have two separate logins, two separate passwords etc. Life was good. Then they had to go complicate things.

Another example is fanbyte. They (zam) own wowhead as well and I believe a few others. fanbyte and wowhead now share the same username and password. change one, cant log into the other until you update the password there.

Last but not least, atlassian. I'll undoubtedly run into more but for now their login also covers bitbucket and trello.

I cant have all these sites with separate login entries as they share a password so not only would a password update wreak havoc on the others, but the passwords would all trigger the double/same password warning.

Is the only solution in these cases to use 1 login entry and add all the websites it is for under that same entry?

Just checking to see if this is what everyone else is doing for these cases?

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