I think I’ve seen erythritol in things like sugar free pancake syrup, but afaik, it’s not in diet sodas.
I do know it’s huge in Lego recipes.
You are probably right. The list in Post #3 doesn’t show any sodas containing Erythritol.
Erythritol is a sugar alcohol....like maltitol, mannitol, and sorbitol. Those are used in sugar free candies. Have they checked the other sugar alcohols?