^^This. I’ve lived all over the country and most vets generally give all at one time. Although, I’ve never had a vet who thought the strangles vaccine was worth giving (but would, as I had one boarding contract that required it initially, but never followed up on it - I didn’t).
That said, i had a mare who, at 9 years and after a move to east TX, started breaking out in hives when getting all vaccines at once, so her vaccines were staggered. Problem solved.