Since there’s no letter X in Ukrainian, today is a wildcard day. I decided to do Tatar names because the Crimean Tatars controlled part of Ukraine for many centuries, and there was some natural cultural osmosis. However, not nearly so much as when the rulers were Polish, Russian, or Austrian! The native population didn’t exactly enjoy the constant slave raids and second-class citizenship.
Male names:
Xäbib is the Tatar form of the Arabic name Habib (darling, belovèd).
Xäkimcan is a variant form of Häkimcan, which comes from the Arabic name Hakim (wise) and the Turkish name Can (pronounced Jan) (life, soul, darling, sweetheart).
Xäsän is the Tatar and Bashkir form of the Arabic name Hasan (handsome).
Xäydär is the Tatar and Bashkir form of the Arabic name Haidar (lion, warrior).
Female names:
Xäbira is probably a feminine form of the Arabic name Habir, or Khabir (expert, learnèd).
Xäyat means “life, being.”
Xörşidä may be a form of the unisex Persian name Khurshid, which derives from the Avestan name Hvare Khshaeta (shining sun).
Xösniya is the Tatar form of the Arabic name Husniya (beauty, goodness, excellence).
Onomastics Outside the Box 
So the X of the Tatars would be the H or the K of other tongues.
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