I am trying to create the dataset in QS from Athena views, but seems like it cannot access it → it shows the drop down with all of the tables & views, but views do not have any data in them:
I usually use virtual views coming from Athena, and I never had an issue with them while reading from QS.
Could be that you have an issue with the permissions. Are you using the Quicksight managed role or an existing role in your account?
Did you include in the one that you are using the rights to read the content of the datacatalog?