it is extremely difficult to avoid stores/businesses owned by religious groups.

I recently avoided purchasing an item from Yakima due to the coming across the following [0]. In reality businesses like Marriott Hotels and Chic Filet irritate me and I avoid when I can (business uses Marriot for work)

if there was a list of athiest or agnostic owned businesses I would likely spend more money at these locations than any others.

[0] https://en.wikipedia.org/wiki/Arcapita#Compliance_with_Shari...

Luckily, there's a lot of other options there, depending on exactly what product you're looking at. Thule is a very big competitor here, plus there's lots of other smaller name-brands too.

But I agree, someone should compile a list of religious-owned companies to avoid, and a list of atheist/agnostic owned companies to choose instead.

However, I do have to ask what your beef with Marriott is. I looked through their Wikipedia page and couldn't find anything about them being religious, except for a mention that they include a copy of the Book of Mormon along with the Bible in each room, but that could be just a PR thing (pretty much every hotel in the US has a Bible in each room after all, and they aren't all religious, they're just catering to America's population). The company itself is publicly traded, unlike privately-held Hobby Lobby.

The ones that irritate me are ChicFilA and In-and-Out Burger, as they're both overtly Christian.

This BTW shows why it's a good idea to, in general, avoid buying from American companies and instead buy from Japanese or western European ones. Japanese ones are probably easily the safest bets, since Japan has an extremely non-religious society, and the Abrahamic religions in particular have almost no representation there. And Japanese companies aren't in bed with Middle Eastern ones.