American Kit Kats are made by the Hershey company and no money goes to Nestlé.

Explanation:
Kit Kat used to be a Rowntree's product, and Hershey bought the right to make the candy in the U.S. in perpetuity back in 1970. When Nestlé bought Rowtree's, they had to abide by the contract to license out the Kit Kat for no royalties, because the only condition of the agreement is that Hershey loses the license if the company ever gets sold. And since selling the Kit Kat bar is so valuable, buying Hershey for what it's currently worth would mean instantly losing a large amount of Hershey's value, so even when they've tried to find a buyer, nobody will buy the company—even Nestlé refused to buy Hershey in 2002.

If you’re in the US, KitKat here is made by Hershey.

But look at Nature Valley “Chocolate Peanut Butter Wafer Bars.” As someone who likes both, they’re not the same - they’re better, as long as you like peanut butter.

If you are in the United States, you are giving your money to Hershey for Kit Kat; it is licensed from Nestlé based on a previous deal with the original owner of the brand. I don't know the exact details of the contract, but it appears that it was a lump sum payment which means no money goes to Nestlé for Kit Kat sales in the US.

Still, Hershey is not much better, and this factoid is irrelevant if you are NOT buying the US version. Similar options include Tim Tam, Double Time, Dido, Trader Joe's Wafer Cookie, Milka Leo or Choco Wafer, Little Secrets Crispy Wafers, and any number of other generic chocolate wafers. You can also make your own: https://www.inthekitchenwithmatt.com/homemade-kit-kats.

Reese’s has a big enough lineup that maybe you can find something?