How do Family accounts get affected by switching to GP Ultimate?

With Live Gold, you have to select which Xbox console is the "Home" console so that other family members can play all the games and also play live multiplayer. Now with Ultimate, it adds access to PC and Android GPass in the subscription. So does that
mean that everyone listed in "family" can enjoy gaming on their PC, Android device, or other consoles in the home now? I am asking before I seriously consider going with the $1 for 3 months promo, or just upgrading in general to Ultimate. I have 3 Xboxes,
4 PCs and 6 Android devices in my home that can access the GamePass. Otherwise, if I have to still continue with just the "home" console for family access, there is no point in me upgrading if my kids cannot access the games in their room consoles or PCs.

:)