Yep, I agree. And as for Taneisha (T520) - Tashiena (T250) - Taneshia (T520) - Taniesha (T520), as you can see, by the Soundex Method the only names which should rightfully remain are definitely Tashiena (T250) and Taneisha (T520), exactly as you suggested.
What I want, is to be able to provide a single, clear-cut explanation as to which names will be found in groupings on the Master List. If I use Soundex, then I have to use it for everything. Which means that "Carol (C640) - Coral (C640) - Carlo (C640)" would have to go.
So maybe Soundex isn't the answer, after all. And then, "Carol" and "Carlo" are basically the same name (in fem. and masc. versions), so perhaps they shouldn't be appearing in the same grouping with each other, anyway.