You’ve got data to back that up?
Exit polls only interview people who vote in person, which may be generally be useful, but in this election are an enormously systematically biased slice of the electorate.
You really can't base any generalizations beyond the in-person voting segment based on them.
Are there some other measurements based on something else, or is it something we now can never know as a result of mail in ballots having no polling and an expected different statistical distribution?
For 2016 and 2018, Pew had validated voter datasets, based on people in their American Trends Panel who were matched against voter databases and thus known to have voted. Assuming they do the same thing (or some other reputable firm does something similar, or ideally both) for 2020, that would probably be the best data source.
This one shows significantly lower Black vote for Trump than the Essence article (12% of men, 6% of women) but an even higher Latino vote (39% of men, 32% of women). Both sets of data show Trump losing support from white men slightly. (Which is consistent with pre-election polling.)
At this point it seems pretty clear that Trump made big gains among Latinos compared to 2016; with other demographics the jury is still out (I think.)
What's clearer is that Trump made big gains in areas of the country with a high Latino and Hispanic population - e.g. Santa Ana county, CA, which is 77% Hispanic, saw a 13-point swing to Trump, and there are many similar datapoints from across the country. It's pretty clear Trump carried Florida on the strength of the Latino vote in that state. There's also similar evidence that Trump made big gains this year among Asians.
https://twitter.com/RyanGirdusky/status/1326190869163225090
https://sweep.thedispatch.com/p/the-sweep-dont-trust-the-exi...
So to summarise: Trump definitely made gains among Hispanics and probably made gains among Asians according to voting data; he made gains with every demographic except white men according to exit polls; the former data is more reliable than the latter.