In 2017, these things were so popular that a lot of people were buying them as executive toys. There was even a Reddit group (which is still being used today) which obsessed with finding high-end spinners, most of which at the time were made in the USA (while kids were buying from the Amazon and Ali Express, executives were buying them as executive toys for upwards of $100-200). They put together a list of high-end makers on Reddit, most of which were companies in the USA that made machinery but decided to allocate a little extra capacity to making these. Seven years later, most of these companies are either out of business or have gone back to making their regular products.
I was able to find ONE US-based company that is still making these: Flyaway Toys. You can buy them at their Etsy shop:
Fidget Spinner from Flyaway Toys, manufactured and assembled in Kenmore, WA
