xbox x and cloud gaming

when will this come https://www.ign.com/articles/microsoft-xbox-series-x-s-games-playable-xbox-one-cloud-gaming xbox series x games playable on xbox one old gen consoles via cloud gaming feature

But in all other write ups the game is listed as complete

Nov. 1

• The Legend of Tianding (Xbox Series X|S Optimized, Xbox One, PC, & Xbox Cloud Gaming)
  
• The Walking Dead: A New Frontier — The Complete Season (PC)
  
• The Walking Dead: Michonne — The Complete Season (PC)
  

Oct. 27

• Frog Detective: The Entire Mystery (PC)
  
• Gunfire Reborn (Xbox Series X|S, Xbox One, PC, & Xbox Cloud Gaming)
  
• SIGNALIS (Xbox Series X|S, Xbox One, PC, & Xbox Cloud Gaming)
  

Oct. 21

• Persona 5 Royal (Xbox Series X|S Optimized, Xbox One, PC, & Xbox Cloud Gaming)
  

happened to me twice playing it with "Cloud Gaming" on Xbox One X

As ngocphi has pointed out, you can't download X/S games to an Xbox One console. The account with the actual Game Pass Ultimate subscription can play these games via the cloud but cloud gaming is not sharable. It is a feature only available to the account with the subscription. A second account on the "Home" Xbox One will not be able to play any X/S games through the cloud unless they actually purchase Game Pass Ultimate.

An Xbox Series X can run 4 sessions of the Xbox one version compared to one of the series X version. so if you're attempting to play an Xbox one native game on the cloud, you will always have greater success simply because there are more slots available to you

Each and every cloud session has an Xbox series X on the other end