In terms of the value of military equipment committed to Ukraine, EU+UK are ahead of the USA when taken together by IFW Kiel's numbers. That's only military aid by the way, not factoring in humanitarian aid or housing refugees and such. That's not to say the US isn't pulling its weight, of course. It is. Just don't go around saying nobody else is, because they are

Iirc many eastern European countries are sending more equipment and weapons per capita than the US like Poland.