I believe there have been some studies that show that artificial sweeteners affect your insulin response to real sugar, but I think it's far from settled science.
I'm not sure how scientific it is but when my wife and I got into keto we bought several sweeteners and did glucose testing at home.
The tricky thing is some artificial sweeteners spiked mine, while others triggered hers.
So it isn't enough to say "artificial sweeteners do | do not", you'd need to test your own reactions via blood glucose testing. So many pin pricks. Neat data though.