Aren't White Americans mostly just a mix of Celtic and Germanic?
Other options for the mutts: Celto-Germanic, Anglo-Celtic , Anglo-Norse, Nordic-Germanic, Norse-Gael, Italo-Celtic, etc.
"White" is why we are in the mess we're are in! This word has taken on religious connotations and has evolved into some secularized stand-in for universalized "christendom", where everyone is "equal in white" (including the lowest scum). The lowest leftist can self-identify as white and then take ownership of white, and all those they label white. They become the universal spokespersons and representatives of "all the whites" (including Europeans) to the ethnics, the judge of the behavior of other whites relative to their socially constructed commandments of white, and they can militate against white to signal their piety.
So, only identity with your ethnic sub-type and sue anyone who labels you white. Then if you ever apply to college or for a job and are forced to identify as white instead of your ethnic sub-type, sue them! In a time when people are being imprisoned and sued for misgendering someone or not using the correct pronouns, this is something that every ethnic European should pursue!
Starting tomorrow I am going to self-identify with the color yellow, then label every Asian person yellow, regardless of what they think about this, because I said all Asians are "fellow yellow people". I will then go stand in-front of groups of other races to give them insider secrets on yellow, and tell them how horrible we yellow people are. I will then go police the behavior of other yellow people. For example, if I see a Japanese man try to take pride in his Japanese heritage without consulting with me first then I will sanction him: "As a fellow yellow person, shame on you!". "As a fellow yellow person, how dare you!". "As a fellow yellow person, let me tell you how European history is superior to 'our' yellow history!"
The mutts do this unironically.
The mutts self-identify with the color white and not only think this allows them to claim Europe, but allows then to take ownership of all those they label white, which includes every European subtype.
Not having a caste system like the jeets have is why we are in the mess we're in.
The first stage in becoming a leftist is self-identifying as "white" and then believing this self-identification self-deifies you as group representative. They then try to weaponize this identity for what they think is a moral good.
Don't give them this assumption of power! Start saying "I'm English, Italian, Russian, etc etc not white!" "We are not the same" and this system becomes deconstructed!