So you mainly want to avoid Intuit owned companies and H&R Block. They alone spent millions per year to lobby against easy and free filing for taxpayers.
Then there’s the ACTR (American Coalition Of Taxpayer Rights) who spend $100s of thousands a year lobbying for the same (and are made up by 14 members:
Edit: Started a post in /c/asklemmy to find out alternatives. Tax Act was my go-to company, but they’ve joined the ACTR at some point, so they’re a no-go.
Edit 2: Checking out some older reddit threads on the subject, FreeTaxUSA may be the best option so far. FreeTaxUSA are owned by Tax Hawk which is a member of the ACTR, however of all the ones i’ve checked so far, they are the cheapest (free Federal and $15 state), and at least they’re not one of the top lobbying companies like Intuit(Turbo Tax/Credit Karma tax services), H&R Block, or Jackson Hewitt.