Well when most people say The Smashing Pumpkins are grunge they only mean Gish and Siamese Dream which the two songs you named arent on either I still dont consider those  albums grunge either and few sources do as well Other than that I agree with DrumstickJugglers points completely If you really want to we could reexamine citations and do the whole grunge listing again to get a new consensus of which bands are grunge based on citations mixed with discretion For instance  Year Bitchs article doesnt list it as grunge and neither do most of the citations Ive found about them Most citations consider them both punk and riot grrrl but not grunge For all I know there could be other bands like this on the list who really arent backed up by citations