I think Shawn would fit in the most- it's a variant spelling, yet it's also very common in the English-speaking world. Due to that, I feel like Shawn has more flexibility with the list's plethora of styles.
I'd say the names most similar (in my mind, at least) are Donna, Raymond, Alicia, and Matt. Also, Jaymes and Giana, because these are variant spellings of names.