The smaller "third wave coffee" shops generally have a liberal bent to them -- largely because the movement was born in Portland and Seattle. You are much more likely to see an "ACAB" sticker, a rainbow flag, or other left-virtue device on display than anything on the other side of the spectrum.

Starbucks may be anti-union, but they have frequently taken public stances of a liberal variety (particularly around visible issues like LGBT activism, and occasionally on guns) which has left those who felt alienated as a ready market for coffee without the moralizing (or coffee with their sort of moralizing)

I often try to find a mainstream trend in the other direction to compare it to, but there are so few mainstream consumer categories dominated by the right, mostly due to demographics.

Drop shipping, white label coffee is an enormous business these days - a considerable number of "influencers" have started launching their own "coffee brands".

Usually they are pretty cagey about the fact its white labelled.

The right wing are incredibly easy to market to.

Some of the products I've seen shilled almost exclusively to that market are hilarious.

One of my favourites is a certain "gold subscription" service, where you sign up for X$/month, and every time you have paid enough in to cover the cost of an amount of literal gold, they send you the gold.

I did some calculations at the time based on my own purchasing of gold in the past and worked out that people buying via that service are getting absolutely rinsed.

The ad/sponcon copy tends to blather about inflation, etc, etc.