I found a Stevia product, White Stevia, in my local organic market. It has maltodextrin added, but that's it. The downside is it's not measure-for-measure with sugar (1/6 tsp vs 1 tsp sugar).
There are plenty of pure stevia powder products. They don't need to be 1:1 for sugar. I am okay with using the tiniest fractional teaspoons to dispense pure stevia.
https://www.nunaturals.com/products/stevia-white-stevia-powd...