XBOX Game Pass Ultimate & Family Sharing for Cloud Gaming?

TL;DR No.

For Cloud Gaming you need to have an active Game Pass Ultimate subscription. You can not share it with your family or friends like you can do with other subscription benefits.

Yes I think there should be a Game Pass Ultimate Family package for 4 or 5 users to share.

Maybe try this - https://answers.microsoft.com/en-us/xbox/forum/all/xbox-game-pass-family-sharing/5d04df06-6024-4126-8425-43957dc46e8a

(reply from 'Spazpol' user).

EDIT: I also found easier to understand, step by step or similar replies here (about sharing Game Pass on PC) - https://answers.microsoft.com/en-us/xbox/forum/all/game-pass-ultimate-family-sharing/2e13e311-19ae-449c-803a-c04aa2a109c5

(reply from 'JohnRichard3' user and 'ArminatorX user').

You would need an Ultimate subscription on your account in order to access Cloud gaming. Sharing with a friend doesn't give you the subscription.

then how Would I play game's on the ultimate game pass then?

The ability to play games through the cloud is not determined by any console type. It would be determined by your subscription. If you have a Game Pass Ultimate subscription, you should be able to play via the cloud on either an Xbox One generation console or on a Series generation of console. It is tied to your account not the console type. Do you currently have an active Game Pass Ultimate subscription? Please note that sharing of Gold through the Home console settings does not enable cloud gaming. Cloud gaming is only available to the actual account with the subscription.