
Many of the people who created characters a while back did not have access to naming conventions as SE had not released any info on it. Some changed their names, other made up reasons as to why their names do not follow the released information. (Such as a Miqo'te abandoning their true name or being raised by another race. A Roe taking on a Hyur sounding name since people couldn't say said Roe's name.)
All the names that I have seen or read don't come close to representing Japanese styled names (FFXIV 1.0 NPC Names for Highlanders)
However, some Miqo'te names can sound Japanese. Such as if you use the naming generator: Ichi comes up as a last name for a female keeper. Ichi would be 'one' in Japanese. Also there is the NPC: Una Tayuun. Which is less likely to be influenced by Japanese, but could be passable as either. However, the Miqo'te as a general do not follow Japanese sounding names as most of the names are sharp and short versus the Japanese 'flowy' sounds.
All the names that I have seen or read don't come close to representing Japanese styled names (FFXIV 1.0 NPC Names for Highlanders)
However, some Miqo'te names can sound Japanese. Such as if you use the naming generator: Ichi comes up as a last name for a female keeper. Ichi would be 'one' in Japanese. Also there is the NPC: Una Tayuun. Which is less likely to be influenced by Japanese, but could be passable as either. However, the Miqo'te as a general do not follow Japanese sounding names as most of the names are sharp and short versus the Japanese 'flowy' sounds.