A strong majority of whites without Bachelor's degrees voted for Trump. "Working class?" [View all]
Percentage of those aged 25 and over in selected occupations without Bachelors' degrees:
Top executives: 31.4%
Advertising and promotions managers: 21.6%
Marketing and sales managers: 30.6%
Administrative services managers: 59.3%
Financial managers: 37.3%
Industrial production managers: 46.2%
Transportation, storage, and distribution managers: 71%
Farmers, ranchers, and other agricultural managers: 76.9%
Construction managers: 65.9%
Property, real estate, and community association managers: 58.1%
(You get the idea.)
Source:
https://www.bls.gov/emp/ep_table_111.htm
Total employment in management occupations, 2014: Over 9.1 million
Source:
https://www.bls.gov/emp/ep_table_102.htm
Note that these numbers/percentages are for workers whom are
currently employed. There are also a lot of retired managers (numbering about a few million, I suspect) who entered the workforce
at least nearly a half-century ago, in
an era in which management occupations didn't need a Bachelor's degree nearly as often as they do today. And those retirees are disproportionately white men. Retired white guys in 2016 seem like a very liberal group of voters overall, if you ask me!
Furthermore, workers - of any occupation - without Bachelor's degrees are disproportionately located outside of major metropolitan areas, in the South or the "heartland", etc. - you know, those bastions of liberal Democratic political strength in 2016.

And regarding income, keep in mind that salaries for all occupations - including management ones - tend to be lower outside the major metros, in rural areas, the South, Appalachia, the rural Rust Belt (and most rural areas in general), "right-to-work" states...see what I mean?
And none of this is even
getting into the self-employed, or the military, or local law enforcement, or workers in anti-environmental, anti-regulation extraction industries, or uncredentialed white evangelical/fundamentalist pastors in the South or Midwest or wherever, or religiously conservative white women (particularly older white women) whom are married to men who tend to have higher incomes (or are the sole breadwinners)
and higher educational attainment than their wives...
Admittedly a lot of these demographics overlap with one another, but the broader point remains:
When speaking of white voters without Bachelor's degrees who voted for Trump, the relationship to class is far from straightforward.