A huge majority of the 1960 Cubans, and their children and grand children, are still concentrated in south Florida.
A majority of them trace their ancestors to Europe - not Cuba.
I do not know enough about Texas to comment. I will have to research your 55% Latino number and comment later.
I do know the Hispanic vote in California, New Mexico, and metro New York City is heavily Democrat, which is obvious from the 2024 NEP national poll.
Oregon is roughly 71% White, while Massachusetts is about 68%. Vermont and Maine are the whitest states in the country, at about 90% each. Washington State is around 65% White, and Minnesota stands out in the Upper Midwest at about 82%. These figures reflect the broad demographic patterns across the northern U.S., with New England and parts of the Midwest remaining the most heavily White by percentage.
According to the argument that you're making, they should be reliable Republican states. Yet they all voted for Harris in 2024.