I want all files: Login.cshtml, Register.cshtml, AccessDenied.cshtml, ForgotPassword.cshtml, ResetPassword.cshtml

If you want the specific list in your post (i.e. Login.cshtml, Register.cshtml, AccessDenied.cshtml, ForgotPassword.cshtml, ResetPassword.cshtml)?

Use the switch --files for a list of files you specifically want to add.

dotnet aspnet-codegenerator identity --files "Account.Register;Account.Login;Account.AccessDenied;Account.ForgotPassword;Account.ResetPassword" --force

--force will overwrite existing files.

I want my command to generate Login.cshtml and Register.cshtml after I run scaffolding command.

dotnet aspnet-codegenerator identity --files "Account.Register;Account.Login"

Every UI file would be the following per the Identity scaffolding dialog: