Chris- just to confirm is your interest in the snmp v1,2,3 credentials or WMI? How about application monitor cred?
and also what version of NPM do you have as the tables just moved around.
That said, go to reports, choose custom SQL and type;
SELECT * FROM dbo.Nodes
then edit table and select the columns you wanted - you should see all the polling creds since nodes is still a view.