There’s something else you’ve got to keep in mind for this as well -- demographics.
OTL, the Philadelphia Convention’s decision to leave the Atlantic Slave Trade unmolested allowed for the young country to double its slave population in that same period; obviously the expansion of slavery to the west, and the increased demand for slave labor therein, did little to help matters. In 1790, they comprised nearly a fifth of the young republic; by 1860, the “colored” share of the overall population had “only” shrunk to 14%. It would fall below 10% in the early 20th Century, which incidentally could be considered the peak of “white privilege” in the country as such.
Now suppose this slave importation bonanza never happened, the institution never expanded westward, and slavery as a whole was abolished a generation earlier. And to top it off, the civil war is either avoided or significantly reduced in scope, meaning many more of these emancipations are coming by way of manumission - - meaning far fewer powerful white families self destruct their wealth, and “white power” as a whole doesn’t lose out economically since you don’t have “uncompensated” emancipation acting as a de facto loss of wealth for the slave holders (transmuting said “wealth” to the freedmen, since they now “own” themselves).
The result of all this may well be that America becomes “whiter” faster; similar to Argentina OTL, this could pave the way for rapid “blancization” by the mid 20th century. What this would mean for US civil liberties, economic growth, and the like -- well, this may just be my impression, but I can’t help but feel that the US would be “poorer”, in every sense of the word, when looking ay their long term prospects TTL. But maybe that’s just my feeling.