Hey,
Server Manager shows status of your physical server. Open Failover Cluster Manager and connect to your cluster to see your VMs and hosts which are added to the cluster. You can also you Windows Admin Center for that.
https://learn.microsoft.com/en-us/windows-server/manage/windows-admin-center/use/manage-failover-clusters
As for In-Progess status of the servers, it might an issue with Server Manager. Might be helpful:
https://community.spiceworks.com/topic/2360004-server-2019-manageability-stuck-on-in-progress-cant-add-new-roles
Windows Admin Center should fix that.
In addition, you should have shared storage for your cluster. If you need one, you can take a look at StarWind VSAN to create replicated storage for Failover Cluster. https://www.starwindsoftware.com/starwind-virtual-san
Cheers,
Alex Bykovskyi
StarWind Software
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