actually, I at least don't see any reason for there being more russian loanwords in TTL's american english. proximity and colonial history have not brought an infusion of russian culture OTL, and I see no reason why that would be different here. if I recall correctly TTL america actually aquired alaska sooner, and even if you don't have to go through canada to reach the rest of the united states TTL, alaska is still a tiny outpost on the end of a long supply line, and so is the part of russia across the strait. additionally there is still a rather strong political divide between the liberal western united states, and isolated korsgaardist russia.
that said, I very much agree with you about the larger dose of french in this america's vernacular. I'm sure this has been mentioned quite often, but I would add that the presence of quebec in the union and the constitutional comminment to multilinguality probably strengthens the positipon of german speakers in america, or at least it seems like less of them might learn english. in fact if german is more prominent or widespread in this USA, and germans' westward migration patterns stay largely similar, there could one day be a couple of majority germanophone states in the northern plains region (montana, dakotas, around there).
also, on the recent subject of accents it seems that with the migration coming down from quebec, and what I at least remember as being rather widespread mixing with anglophones, there might be a regional accent centered on ontario and eastern huron, with which we are unfamiliar in OTL. gitchigumee probably has a unique accent as well.