Potato Patahto or something like that

Pantone color 64-8: Potato Brown
The color “potato”

It’s a common bit of writing wisdom, that character names should not start with the same letter. Having both Brad and Barney in the same story can confuse readers. I had this issue with two of my characters in Book One. The names seemed different to me, but not my readers. (I changed one of the names.)
With the increasing popularity of audiobooks, it now seems writers need to consider the sounds of the names as well as spelling.
I’m listening to “Elantris” by Brandon Sanderson, and two of his POV character names sound nearly identical, despite being spelled differently. Raoden and Hrathen (pronounced Rathen).
OMG the confusion each time there’s a POV shift.