When you try to create a list content block for a home page the list of tables show an empty drop down.
The drop down shows --None--
Release or Environment
Madrid, New York, Orlando
Check the application scope you are currently on.
You need to be in global application scope to see the list of tables that are global scope.
You can only see that tables that belong to the current application scope you are in.
This is an expected behavior in the platform.