Can I access my downloaded library through cloud gaming?

Currently you can't play purchased games through xCloud, you can only play the games included with the service.

Thank you for the reply. However the only issue with this is that the game I'm trying to launch through cloud doesn't have the cloud icon in my library but it does when I look at it through the gamepass store. In my library instead of showing the gamepass and cloud icon it just shows the name of the game and "owned"

If it matters I think it has something to do with the Cloud Storage thing because it has a little cloud icon on one of the games in my library or whatever and says I can download it. So how can I clear my Cloud Storage off my Xbox One?

They will be, although there are other games in my library that are older (and also 360 games) that I can still access, download and play.

First of all, you won't be able to purchase it on the cloud - since you can only be able to access cloud games if you have game pass Ultimate as we've discussed above.

Yes, if you purchase the game through the Microsoft store app, you can be able to download it on your PC and since you have game pass Ultimate, yes you can access the game through the cloud together with the DLC's that you have from owning the premium deluxe.