We need to to move away from the word "white". We need an ethnically indicative word that is more cultural and specific than white.
Obviously, for those of a specific ethnicity you would be English-American, Slavic-American, etc. But for the mutts, what is a better word than white?
Would Celto-Germanic be it? Aren't White Americans mostly just a mix of Celtic and Germanic?
Other options: Anglo-Celtic, Anglo-Norse, Nordic-Germanic, Norse-Gael, Italo-Celtic, etc. Internally we should go by the European racial subtypes: Nordic, Med, Dinaric, etc.
The point is to atomize/delineate from other people who identify as white. Smash universalism/assumed group representatives which comes with white.