May is okay. I like the y in the end.
Mae reminds me of
Tina Turner and
Mae West. And I kind of expect it to be part of a combo, like
Ellie Mae og
Anna Mae. I like
Maeve better.
Mei is pretty. It’s probably the nicest version and the only option I actually like.
I wouldn’t know about the Japanese
Mai but
Mai is the standard Danish version. Pronounced like My but the sound is shorter. TBH, I’ve always thought the name was kinda dull. Especially in the combination, you often find it in, in Denmark: Mai-Britt.
Maiken (a related name) is also pretty dull.